100525 + Interview Questions in GENERAL QA IN GENERAL AWARENESS Page 553 InterviewSolution

27601.

Complete the TableNaturalMan madeCosmic ray for outer spaceThe use of radioactive isotopes in the medical fieldRadiations from radioactive materials on the EarthWastes from nuclear reactor

Answer»

Natural	Man made
Cosmic ray for outer space	The use of radioactive isotopes in the medical field
Radiations from radioactive materials on the Earth	Wastes from nuclear reactor
Radiations from radioactive materials on the soil, water, and vegetation.	Televisions. Medical X-rays, Smoke detectors, Lantern mantles Nuclear medicine, Building materials
Internal radiations Potassium – 40, Carbon -14, Lead – 210	During nuclear experiments

Discussion

27602.	Take two conical flasks. Paint the outer surface of one with black paint and the other, with white paint. Fill both of them with water and expose them to direct sunlight for the same period of time. Which one gets heated first? What may be the reason?
Answer» The conical flask which is painted black seems to be more hot when kept under the sun for an hour because the black body absorbs more heat and do not let it out from it. It is the property of black body to absorb heat and there is no chance of heat to escape.

Discussion

27603.	If the plates of a parallel plate capacitor are not equal in area, thenA. quantity of charge on the plates will be the same, but nature of charge will differ.B. quantity of charge as well as nature of charge on the plates will be differentC. quantity of charge on the plates will be different, but nature of charge will be the same.D. quantity of charge as well as nature of charge will be the same.
Answer» Correct Answer - A The total charge on each plate will have to be same. They should also carry opposite charges.

Discussion

27604.	Three charges q, q, and -2q are fixed on the vertices of an equilateral triangular plate of edge length a. This plate is in equilibrium between two very large plates having surfaces charge density `sigma_1 and sigma_2`, respectively. Find the time period of small anglular oscillations about an axis passing through its centroid and perpendicular to the plane. Moment of inertia of the system about this axis is l.A. `2pi sqrt((epsilon_0l)/(qa\|sigma_1-sigma_2\|)`B. `2pi sqrt((epsilon_0l)/(2qa\|sigma_1-sigma_2\|)`C. `2pi sqrt((2epsilon_0l)/(sqrt3qa\|sigma_1-sigma_2\|)`D. `2pi sqrt((2epsilon_0l)/(qa\|sigma_1-sigma_2\|)`
Answer» Correct Answer - C Net dipole moment `=sqrt(3)qa` `r=-sqrt(3)qa([sigma_(1)-sigma_(2)]theta)/(2epsilon_(0))=1a` `(sqrt(3)qa\|sigma_(1)-sigma_(2)])/(2epsilon_(0))=l((2pi)/(T))` `T=2pisqrt(((2epsilon_(0)l))/(sqrt(3)qa\|sigma_(1)-sigma_(2)])`

Discussion

27605.	Write a relation for polarization \(\vec P\) of a dielectric material in the presence of an external electric field \(\vec E\).
Answer» Reduced value of electric field, E’ is : \(\vec {E'}=\vec E - \frac{\vec P}{∈},\) Where ∈ = permittivity of dielectric medium.

27605.

Write a relation for polarization \(\vec P\) of a dielectric material in the presence of an external electric field \(\vec E\).

Answer»

Reduced value of electric field, E’ is :

\(\vec {E'}=\vec E - \frac{\vec P}{∈},\)

Where ∈ = permittivity of dielectric medium.

Discussion

27606.	Draw a graph showing the variation of potential energy betwen a pair of nucleons as a function of their separation. Indicate the regions in which the nucleus force is (i) attractive, (ii) repulsive. Write two important conclusions which you can draw regarding the nature of the nuclear forces.
Answer» Part AB represents repulsive force and Part BCD represents attractive force. Conclusions : (1) Nuclear forces are attractive and stronger, then electrostatic force. (2) Nuclear forces are charge-independent.

27606.

Draw a graph showing the variation of potential energy betwen a pair of nucleons as a function of their separation. Indicate the regions in which the nucleus force is (i) attractive, (ii) repulsive. Write two important conclusions which you can draw regarding the nature of the nuclear forces.

Answer»

Part AB represents repulsive force and Part BCD represents attractive force.

Conclusions :

(1) Nuclear forces are attractive and stronger, then electrostatic force.

(2) Nuclear forces are charge-independent.

Discussion

27607.	Complete the reaction : n + 92U235 → 56Ba144 + .... + 3n
Answer» n + ₉₂U²³⁵ → ₅₆Ba¹⁴⁴ + .... + 3n From conservation of mass, 144 + A + 3 = 235 + 1 A = 89 From conservation of charge, 56 + Z + 0 = 92 + 0 ∴ Z = 36 Element with Z = 36 is krypton.

27607.

Complete the reaction : n + 92U235 → 56Ba144 + .... + 3n

Answer»

n + ₉₂U²³⁵ → ₅₆Ba¹⁴⁴ + .... + 3n

From conservation of mass,

144 + A + 3 = 235 + 1

A = 89

From conservation of charge,

56 + Z + 0 = 92 + 0

∴ Z = 36

Element with Z = 36 is krypton.

Discussion

27608.	Answer the following questions according to the text.Wolfgang Amadeus Mozart’s world was a world of music from the moment he was born. His father, who was a fine musician, was teaching his daughter to play the piano. Little Wolfgang used to listen to his sister as she practiced. He quickly learned the pieces she played. One day he said he wanted to play too. But he was only three years old then, and his father thought that his hands were too small. However, that evening, alone and in the dark, he played the pieces his sister had been practicing and he played them much better than her. 1. While his sister was practicing, Mozart _____. A) usually made a lot of noise. B) used to play by himself. C) used to feel very bored. D) and his father talked about music. E) learned how to play the piano. 2. Mozart’s father didn’t believe that _____. A) his daughter practiced often enough. B) a child of three could possibly play the piano. C) his children would ever learn to play well. D) music could be regarded as a profession. E) children could understand music well. 3. As a child, Mozart _____. A) was hated by his father. B) was taught by his sister to play the piano. C) rarely listened to any music. D) had a great talent for music. E) used to play for his sister.
Answer» 1 E) learned how to play the piano. 2 B) a child of three could possibly play the piano 3 D) had a great talent for music

27608.

Answer the following questions according to the text.Wolfgang Amadeus Mozart’s world was a world of music from the moment he was born. His father, who was a fine musician, was teaching his daughter to play the piano. Little Wolfgang used to listen to his sister as she practiced. He quickly learned the pieces she played. One day he said he wanted to play too. But he was only three years old then, and his father thought that his hands were too small. However, that evening, alone and in the dark, he played the pieces his sister had been practicing and he played them much better than her. 1. While his sister was practicing, Mozart ___. A) usually made a lot of noise. B) used to play by himself. C) used to feel very bored. D) and his father talked about music. E) learned how to play the piano. 2. Mozart’s father didn’t believe that _. A) his daughter practiced often enough. B) a child of three could possibly play the piano. C) his children would ever learn to play well. D) music could be regarded as a profession. E) children could understand music well. 3. As a child, Mozart ___. A) was hated by his father. B) was taught by his sister to play the piano. C) rarely listened to any music. D) had a great talent for music. E) used to play for his sister.

Answer»

1 E) learned how to play the piano.

2 B) a child of three could possibly play the piano

3 D) had a great talent for music

Discussion

27609.	Assertion (A) : Magnetic field lines cannot start from a point nor end at a point. Reason (R) : The line integral of magnetic field induction over a closed path is not zero.(a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is NOT the correct explanation of A (c) A is true but R is false (d) A is false and R is also false
Answer» Option : (C) The magnetic lines of force form a closed path, hence the line integral of \(\vec B\) over the closed path is zero. Thus, Assertion is true and Reason is false.

27609.

Assertion (A) : Magnetic field lines cannot start from a point nor end at a point. Reason (R) : The line integral of magnetic field induction over a closed path is not zero.(a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is NOT the correct explanation of A (c) A is true but R is false (d) A is false and R is also false

Answer»

Option : (C)

The magnetic lines of force form a closed path, hence the line integral of \(\vec B\) over the closed path is zero.

Thus,

Assertion is true and Reason is false.

Discussion

27610.	Assertion (A) : In optical fibre, the diameter of the core is kept small Reason (R) : The small diameter of the core ensures that the fibre should have inside it an angle greater than critical angle needed for total internal reflection(a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is NOT the correct explanation of A (c) A is true but R is false (d) A is false and R is also false
Answer» Option : (A) Both, the Assertion and Reason are two and later explains the former correctly. Total internal reflection of light takes place if angle of incidence is greater than critical angle. So, small diameter ensures that incident light falls at an angle greater than critical angle.

27610.

Assertion (A) : In optical fibre, the diameter of the core is kept small Reason (R) : The small diameter of the core ensures that the fibre should have inside it an angle greater than critical angle needed for total internal reflection(a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is NOT the correct explanation of A (c) A is true but R is false (d) A is false and R is also false

Answer»

Option : (A)

Both, the Assertion and Reason are two and later explains the former correctly.

Total internal reflection of light takes place if angle of incidence is greater than critical angle.

So, small diameter ensures that incident light falls at an angle greater than critical angle.

Discussion

27611.	An electric field is expressed as `E = 2 hati +3 hatj`. Find the potential difference `(V_(A)-V_(B))` between two points A and B whose position vectors are given by `r_(A) = hati +2hatj` and `r_(B) = hatj +3hatk`A. `-1V`B. `1V`C. `2V`D. `3V`
Answer» Correct Answer - A `V_(A)-V_(B) = int_(x_(A))^(x_(B)) E_(x)dx +int_(y_(A))^(y_(B))E_(y)dy + int_(z_(A))^(z_(B)) E_(z)dz` `= int_(1)^(2) 2dx +int_(2)^(1) 3dy +in odz` `= 2(2-1)+3(1-2) = 2-3 =- 1` volt

Discussion

27612.	Explain Predation?
Answer» Predation is a type of interaction in which a larger organism called predator of higher trophic level seeds on another called prey of lower trophic level. In this type of interaction, one of the partner’s (predator) is benefitted while the prey is harmed. Role played by predators : They act as links for energy transfer across trophical levels. They keep prey populations under control. Defences developed by animals preys against predators : Some show cryptic colouration to avoid being detected easily by the predator. Some are poisonous and some are highly distantefal and therefore are avoided by the predators. Defences developed by plant preys against predators : Thorns (Acacia, cactus) are morphological means of defence. Many plants produce and store chemicals like nicotine, caffeine, quinine, strychnine, opium etc., that make the herbivore sick when they are eaten, inhibit feeding or digestion, disrupt its reproduction of even kill it.

27612.

Explain Predation?

Answer»

Predation is a type of interaction in which a larger organism called predator of higher trophic level seeds on another called prey of lower trophic level.
In this type of interaction, one of the partner’s (predator) is benefitted while the prey is harmed.

Role played by predators :

They act as links for energy transfer across trophical levels.
They keep prey populations under control.

Defences developed by animals preys against predators :

Some show cryptic colouration to avoid being detected easily by the predator.
Some are poisonous and some are highly distantefal and therefore are avoided by the predators.

Defences developed by plant preys against predators :

Thorns (Acacia, cactus) are morphological means of defence.
Many plants produce and store chemicals like nicotine, caffeine, quinine, strychnine, opium etc., that make the herbivore sick when they are eaten, inhibit feeding or digestion, disrupt its reproduction of even kill it.

Discussion

27613.	Sertoli cells are very much essential during spermatogenesis. Why?
Answer» They provide necessary nutrition for the normal development of germ cells (sperms) during spermatogenesis.

Discussion

27614.	Name the hormone that induces rupturing of Graafian follicle.
Answer» Luteinizing hormone (LH).

Discussion

27615.	A particle is subjected to two simple harmonic motions along x and y directions according to `x=3sin100pit`, `y=4sin100pit`.A. Motion of particle will be on ellipse traversing it in clockwise direction.B. Motion of particle will on a straight line with slope `4//3`C. Motion will be a simple harmonic motion along x-axis with amplitude 5.D. Phase difference between two motions is `pi//2`
Answer» Correct Answer - B `x = 3 sin 100 pi t` `y = 4 sin 100 pi t` Equation of path is `(y)/(x) = (4)/(3)` i.e. `y = (4)/(3) x` which is equation of a straight line having slope `(4)/(3)` Equation of resulting motion is `vec(r) = x hat(i) + y hat (j)`

Discussion

27616.	A solenoid with N loops of wire tightly wrapped around an iron-core is carrying an electric current I. If the current through this solenoid is reduced to half, then what change would you expect in inductance L of the solenoid.
Answer» Given: I' = \(\frac{I}{2}\) Inductance, L = μ_o. \(\frac{N^2}{e}\).A l : length of solenoid N: number of lines A: area of cross- section of solenoid Since, 'I' is independent of current, so there is no change in the inductance of the solenoid. Remains same.

27616.

A solenoid with N loops of wire tightly wrapped around an iron-core is carrying an electric current I. If the current through this solenoid is reduced to half, then what change would you expect in inductance L of the solenoid.

Answer»

Given: I' = \(\frac{I}{2}\)

Inductance, L = μ_o. \(\frac{N^2}{e}\).A

l : length of solenoid

N: number of lines

A: area of cross- section of solenoid

Since, 'I' is independent of current, so there is no change in the inductance of the solenoid.

Remains same.

Discussion

27617.	The decay constant of a radioactive substance is 0.173 `("years")^(-1)`. Therefore:A. Nearly 63% of the radioactive substance will decay in (1/0.173) year.B. half life of the radio active substance is (1/0.173) year.C. one-fourth of the radioactive substance will be left after nearly 8 years.D. one-fourth of the radioactive substance will be left after nearly 6 years.
Answer» Given `lambda=0.173` `T_(1//2)=(ln2)/(lambda)=0.693/0.173~=4` Also for t 1/0.173 year Remaining nuclei `N=N_(0)e^(-1)=0.37 N_(0)` Decay nuclie=`N_(0)-N=0.63 N_(0)`

Discussion

27618.	In a photoelectric experiment, the potential required to stop the ejection of electrons from cathode is 4V. What is the value of maximum kinetic energy of emitted Photoelectrons?
Answer» (K.E)_max= q x V_o ;where, V_o = stopping potential = e x 4V ; e = charge on an electron (K.E)_max = 4eV The answer is: 4eV

27618.

In a photoelectric experiment, the potential required to stop the ejection of electrons from cathode is 4V. What is the value of maximum kinetic energy of emitted Photoelectrons?

Answer»

(K.E)_max= q x V_o ;where, V_o = stopping potential

= e x 4V ; e = charge on an electron

(K.E)_max = 4eV

The answer is: 4eV

Discussion

27619.	An alternating current from a source is given by i=10sin314t. What is the effective value of current and frequency of source?
Answer» Given: i = 10sin314t comparing with, i = i_osinωt i_o = 10A ω = 314 \(\Rightarrow\) \(2\pi v\) = 314 \(\Rightarrow\) v = \(\frac{314}{2\pi}\) = \(\frac{314}{2\times3.14}\) = 50Hz i_eff = i_rms= \(\frac{i_o}{\sqrt2}\) = 0.707 x 10 = 7.07 A 7.707A, 50Hz.

27619.

An alternating current from a source is given by i=10sin314t. What is the effective value of current and frequency of source?

Answer»

Given: i = 10sin314t

comparing with, i = i_osinωt

i_o = 10A

ω = 314 \(\Rightarrow\) \(2\pi v\) = 314 \(\Rightarrow\)

v = \(\frac{314}{2\pi}\)

= \(\frac{314}{2\times3.14}\)

= 50Hz

i_eff = i_rms= \(\frac{i_o}{\sqrt2}\) = 0.707 x 10

= 7.07 A

7.707A, 50Hz.

Discussion

27620.	The dimensional formul for impulse is same as the dimensional formula forA. momentumB. forceC. rate of change of momentumD. torque
Answer» Correct Answer - A Momentum`=mupsilon=[MLT^-1]` `Impulse`=`force`xx`time`=[MLT^-2]xx[T]=[MLT^-1]`

Discussion

27621.	Which pair has the same dimensions?A. work and powerB. density and relative densityC. momentum and impulseD. stress and strain
Answer» Correct Answer - C Impulse`=`change in momentum so dimensions of both quantities will be same and equal to `MLT^-1`

Discussion

27622.	Given below are the layers of human gut. Write a flow chart from inner region. Serosa, mucosa, muscularis, submucosa
Answer» Mucosa → Submucosa → Muscularis → Serosa

Discussion

27623.	Explain the role of the Sun in the formation of soil.
Answer» Hint— The rocks are heated by the sun; they contract during night but not at same rate —resulting in cracks in rocks and ultimately to smaller particles.

Discussion

27624.	How do fossil fuels cause air pollution?
Answer» The fossil fuels like coal and petroleum contain small amounts of nitrogen and sulphur. When fossil fuels are burnt, it produces oxides of nitrogen and sulphur. These gases cause inhalation problems and in presence of rain forms acid rain. Burning of fossil fuels also increases the amount of suspended particles in air that reduce the visibility.

Discussion

27625.	The good absorbers of heat normally areA. Poor reflectorB. Good conductorC. Poor conductor
Answer» B Good conductors of heat

27625.

The good absorbers of heat normally areA. Poor reflectorB. Good conductorC. Poor conductor

Answer»

B Good conductors of heat

Discussion

27626.	I don’t think you can lift that case ________ I help you. A) since B) without C) not D) unless E) with
Answer» Correct option is D) unless

Discussion

27627.	The quantity which does not vary periodically for a particle performing SHM isA. accelerationB. total energyC. displacementD. velocity
Answer» Correct Answer - B For a particle executing simple harmonic motion (SHM), Total energy = kinetic energy + potential energy `=E_(K)+E_(P)=1/2mv^(2)+1/2kx^(2)` `=1/m(A^(2)-x^(2))+1/2momega^(2)A^(2)` `(becausev=sqrt(A^(2)-x^(2))` where, A is the amplitude of the particle`)` `=1/2KA^(2)` It is independent oft, xis remains constant i.e., it does not vary periodically. However, the displacement of a particle executing SHM along x-axis is given by `x=Asin(omegat+phi)` (where, A= amplitude, `omega` = angular velocity t = time, `phi` = initial phase of the particle) i.e., displacement varies periodically with time t. Velocity of particles executing SHM, `v=(dx)/(dt)=omegasqrt(A^(2)-x^(2))` which varies with x. Acceleration of the particle, `a=(dv)/(dt)=-omega^(2)x` Which also varies with x.

Discussion

27628.	Susan was alone in the house when the fire ________. A) broke off B) broke out C) broke in D) broke up E) broke away
Answer» Correct option is B) broke out

Discussion

27629.	We are ________ into our new house on Saturday. A) moving B) proceeding C) entering D) arriving E) transporting
Answer» Correct option is A) moving

Discussion

27630.	A: Did someone really write those words on the wall? B: Yes, I actually saw them_____ on the wall. A) written B) to write C) to be written D) writing
Answer» Correct option is A) written

Discussion

27631.	The men ___ after the explosion. A) are said to be arrested B) said to be arrested C) are said to being arrested D) are said to have been arrested E) are said to arrest
Answer» Correct option is D) are said to have been arrested

Discussion

27632.	A.: Was there any trouble at the yesterday’s demonstration? B.: Yes, about twenty people ___ . A) had been arrested B) arrested C) were being arrested D) were arrested E) are arrested
Answer» Correct option is D) were arrested

Discussion

27633.	”Did someone throw those letters away?” -”Yes, but it was a mistake. They ___ away.” A) mustn’t be thrown B) shouldn’t be thrown C) shouldn’t have been thrown D) can’t be thrown E) need to be thrown
Answer» Correct option is C) shouldn’t have been thrown

Discussion

27634.	What ______ UNICEF mean ? A) is B) does C) do D) was
Answer» Correct option is B) does

Discussion

27635.	Have you heard about Sally? She killed______. A) itself B) herself C) on her own D) by herself
Answer» Correct option is B) herself

Discussion

27636.	This time tomorrow I ______ visiting my parents. A) was B) will be C) have been D) been
Answer» Correct option is B) will be

Discussion

27637.	Mrs. Sharma bought 7.35 m of fabric for her elder daughter, 6.75 m for the younger daughter, 8.57 m for her husband, and 7.83 m for herself. How much dress material (in m) did she bought in total?1. 29.72. 30.53. 274. 32.5
Answer» Correct Answer - Option 2 : 30.5 Given: Mrs. Sharma bought fabric for her elder daughter = 7.35 m Mrs. Sharma bought fabric for her younger daughter = 6.75 m Mrs. Sharma bought fabric for her husband = 8.57 m Mrs. Sharma bought fabric for herself = 7.83 m Concept Used: Total fabric bought is the sum of all members fabrics Formula used: Total = a + b + c + d Calculations: Total fabric brought by Mrs. Sharma = 7.35 + 6.75 + 8.57 + 7.83 ⇒ 30.5 ∴ The total fabric brought by Mrs. Sharma is 30.5

27637.

Mrs. Sharma bought 7.35 m of fabric for her elder daughter, 6.75 m for the younger daughter, 8.57 m for her husband, and 7.83 m for herself. How much dress material (in m) did she bought in total?1. 29.72. 30.53. 274. 32.5

Answer» Correct Answer - Option 2 : 30.5

Given:

Mrs. Sharma bought fabric for her elder daughter = 7.35 m

Mrs. Sharma bought fabric for her younger daughter = 6.75 m

Mrs. Sharma bought fabric for her husband = 8.57 m

Mrs. Sharma bought fabric for herself = 7.83 m

Concept Used:

Total fabric bought is the sum of all members fabrics

Formula used:

Total = a + b + c + d

Calculations:

Total fabric brought by Mrs. Sharma = 7.35 + 6.75 + 8.57 + 7.83

⇒ 30.5

∴ The total fabric brought by Mrs. Sharma is 30.5

Discussion

27638.	If we can ________ our present difficulties, then everything should be all right. A) get off B) come across C) come overD) get over E) get away
Answer» Correct option is D) get over

Discussion

27639.	I’m ________ to get the tickets for the show today, as there are hardly any left. A) worried B) curious C) anxious D) afraid E) troubled
Answer» Correct option is C) anxious

Discussion

27640.	The lung is a(an) _______. A) part B) tool B) instrument D) organ
Answer» Correct option is D) organ

Discussion

27641.	Her condition improved ______. There was a ______ improvement in her condition.A) steady / steadinessB) steadiness / steadyC) steady / steadilyD) steadily / steady
Answer» Correct option is D) steadily / steady

Discussion

27642.	The weather changed ______. There was an ______ change in the weather.A) unexpected / unexpectedlyB) unexpectancy / unexpectedC) unexpectedly / unexpectedD) unexpectedly / unexpectation
Answer» Correct option is C) unexpectedly / unexpected

Discussion

27643.	Gold is a ______ . A) metal B) liquid C) gas D) mixture
Answer» Correct option is A) metal

Discussion

27644.	Water is ______ for life. A) harmful B) necessary C) problemD) matter
Answer» Correct option is B) necessary

Discussion

27645.	Deserts are often ______ regions. A) dry B) wet C) cold D) small
Answer» Correct option is A) dry

Discussion

27646.	The pain was ______. A) necessary B) unbearable C) large D) incredible
Answer» Correct option is B) unbearable

Discussion

27647.	The noise in the classroom is getting unbearable. I simply won’t ________ it! A) put across B) put up with C) put through D) put with
Answer» Correct option is B) put up with

Discussion

27648.	_______ is a fact. A) That the poor have a hard life B) The world is round C) He came first D) What is he saying
Answer» Correct option is A) That the poor have a hard life

Discussion

27649.	Did _______ help him in his career? A) the fact that his father was a professor B) he was rich and friendly C) that he won a scholarship D) his teacher recommended him
Answer» Correct option is A) the fact that his father was a professor

Discussion

27650.	“If I were you, I’d open a bank account because interest is high now” I told her. I suggested that she _______ a saving account. A) would open B) will open C) open D) had opened
Answer» Correct option is C) open

Discussion

Explore topic-wise InterviewSolutions in .

Complete the TableNaturalMan madeCosmic ray for outer spaceThe use of radioactive isotopes in the medical fieldRadiations from radioactive materials on the EarthWastes from nuclear reactor

Take two conical flasks. Paint the outer surface of one with black paint and the other, with white paint. Fill both of them with water and expose them to direct sunlight for the same period of time. Which one gets heated first? What may be the reason?

Write a relation for polarization \(\vec P\) of a dielectric material in the presence of an external electric field \(\vec E\).

Draw a graph showing the variation of potential energy betwen a pair of nucleons as a function of their separation. Indicate the regions in which the nucleus force is (i) attractive, (ii) repulsive. Write two important conclusions which you can draw regarding the nature of the nuclear forces.

Complete the reaction : n + 92U235 → 56Ba144 + .... + 3n

An electric field is expressed as `E = 2 hati +3 hatj`. Find the potential difference `(V_(A)-V_(B))` between two points A and B whose position vectors are given by `r_(A) = hati +2hatj` and `r_(B) = hatj +3hatk`A. `-1V`B. `1V`C. `2V`D. `3V`

Explain Predation?

Sertoli cells are very much essential during spermatogenesis. Why?

Name the hormone that induces rupturing of Graafian follicle.

A solenoid with N loops of wire tightly wrapped around an iron-core is carrying an electric current I. If the current through this solenoid is reduced to half, then what change would you expect in inductance L of the solenoid.

In a photoelectric experiment, the potential required to stop the ejection of electrons from cathode is 4V. What is the value of maximum kinetic energy of emitted Photoelectrons?

An alternating current from a source is given by i=10sin314t. What is the effective value of current and frequency of source?

The dimensional formul for impulse is same as the dimensional formula forA. momentumB. forceC. rate of change of momentumD. torque

Which pair has the same dimensions?A. work and powerB. density and relative densityC. momentum and impulseD. stress and strain

Given below are the layers of human gut. Write a flow chart from inner region. Serosa, mucosa, muscularis, submucosa

Explain the role of the Sun in the formation of soil.

How do fossil fuels cause air pollution?

The good absorbers of heat normally areA. Poor reflectorB. Good conductorC. Poor conductor

I don’t think you can lift that case ________ I help you. A) since B) without C) not D) unless E) with

The quantity which does not vary periodically for a particle performing SHM isA. accelerationB. total energyC. displacementD. velocity

Susan was alone in the house when the fire ________. A) broke off B) broke out C) broke in D) broke up E) broke away

We are ________ into our new house on Saturday. A) moving B) proceeding C) entering D) arriving E) transporting

A: Did someone really write those words on the wall? B: Yes, I actually saw them_____ on the wall. A) written B) to write C) to be written D) writing

The men ___ after the explosion. A) are said to be arrested B) said to be arrested C) are said to being arrested D) are said to have been arrested E) are said to arrest

A.: Was there any trouble at the yesterday’s demonstration? B.: Yes, about twenty people ___ . A) had been arrested B) arrested C) were being arrested D) were arrested E) are arrested

”Did someone throw those letters away?” -”Yes, but it was a mistake. They ___ away.” A) mustn’t be thrown B) shouldn’t be thrown C) shouldn’t have been thrown D) can’t be thrown E) need to be thrown

What ______ UNICEF mean ? A) is B) does C) do D) was

Have you heard about Sally? She killed______. A) itself B) herself C) on her own D) by herself

This time tomorrow I ______ visiting my parents. A) was B) will be C) have been D) been

Mrs. Sharma bought 7.35 m of fabric for her elder daughter, 6.75 m for the younger daughter, 8.57 m for her husband, and 7.83 m for herself. How much dress material (in m) did she bought in total?1. 29.72. 30.53. 274. 32.5

If we can ________ our present difficulties, then everything should be all right. A) get off B) come across C) come overD) get over E) get away

I’m ________ to get the tickets for the show today, as there are hardly any left. A) worried B) curious C) anxious D) afraid E) troubled

The lung is a(an) _______. A) part B) tool B) instrument D) organ

Her condition improved ______. There was a ______ improvement in her condition.A) steady / steadinessB) steadiness / steadyC) steady / steadilyD) steadily / steady

The weather changed ______. There was an ______ change in the weather.A) unexpected / unexpectedlyB) unexpectancy / unexpectedC) unexpectedly / unexpectedD) unexpectedly / unexpectation

Gold is a ______ . A) metal B) liquid C) gas D) mixture

Water is ______ for life. A) harmful B) necessary C) problemD) matter

Deserts are often ______ regions. A) dry B) wet C) cold D) small

The pain was ______. A) necessary B) unbearable C) large D) incredible

The noise in the classroom is getting unbearable. I simply won’t ________ it! A) put across B) put up with C) put through D) put with

_______ is a fact. A) That the poor have a hard life B) The world is round C) He came first D) What is he saying

Did _______ help him in his career? A) the fact that his father was a professor B) he was rich and friendly C) that he won a scholarship D) his teacher recommended him

“If I were you, I’d open a bank account because interest is high now” I told her. I suggested that she _______ a saving account. A) would open B) will open C) open D) had opened

Her condition improved . There was a improvement in her condition.A) steady / steadinessB) steadiness / steadyC) steady / steadilyD) steadily / steady

The weather changed . There was an change in the weather.A) unexpected / unexpectedlyB) unexpectancy / unexpectedC) unexpectedly / unexpectedD) unexpectedly / unexpectation