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5051.

If an employee is no longer needed, he or she can be made _____ . A) resigned B) redundant C) employer D) retiring

Answer»

Correct option is B) redundant

5052.

You can often find about a new job by a/an _____ in a newspaper. A) news B) completion C) sensation D) advertisement

Answer»

Correct option is D) advertisement

5053.

Sarcomere is distance betweenA. Two I-bandsB. A and I bandsC. Two Z-linesD. Z and A bands

Answer» Correct Answer - C
Sarcomere is distance between two Z-lines.
5054.

Sensation of hearing is a result ofA. Vibrations of ear ossiclesB. Nerve impulses from hair cells of organs of CortiC. Vibrations in external auditory meatusD. Vibrations in ear drum

Answer» Correct Answer - B
Sensation of hearing is a result of nerve impulses from hair cells of organs of Corti.
5055.

Calculate the power required by a force to turn a rigid body by some angle θ.

Answer»

Power in rotational motion is as in linear motion. derivation of Power to rotational motion can be obtained  from Work and Kinetic Energy, the instantaneous power (or just power) is defined as the rate of doing work

P = dW / dt

If we have a net torque then W =  τθ  and the power is

P = dW / dt = d / dt (τθ) = τ dθ / dt

P = τω

Thus the power to turn a rigid body is given as P = τω

5056.

Major protein in thick filaments of skeletal muscle fibre inA. MyosinB. ActinC. TropomyosinD. Troponin

Answer» Correct Answer - A
Major protein in the thick filaments of skeletal muscle fibre is mysoin.
5057.

In a `P-N` junction diode is `P` region is heavily doped than `n` region then the depletion layer isA. decreased with heavy dopingB. increased by reverse biasingC. decreased with light dopingD. increased by forward biasing

Answer» Correct Answer - B
In case of p - n junction diose, when it is reverse biased, the reverse voltage supports the barrir potential and hence the width of the depltion layer increases .
In forward baising, the width decreases as the forward voltahe opposes the potential barrier.
The width of the depletion region increases, if the diode is further dopend heavily as the movement of charge carrier decreases.
Also, when the p -n junction is light doped, the width of depletion region increases, due to increases in the potential barrier.
5058.

membrane and receptors

Answer»
it's an autoimmune disorder in which acetylcholine receptor of our joint get blocked.(but it's a question of bio)
5059.

Cervical vertebrae differ from other vertebra in having - (1) Spinous process (2) Centrum (3) Transverse process (4) Transverse foramen

Answer»

(4) Transverse foramen

5060.

Trochanters occur inA. HumerusB. FemurC. Radio-ulnaD. Tibio-fibula

Answer» Correct Answer - B
Trochanters occur in femur.
5061.

Differentiate Ehler’s – Danlos syndrome and stickler syndrome?

Answer»

Ehler’s – Danlos syndrome is the defect in the synthesis of collagen in the joints, heart valves, organ walls and arterial walls: 

Stickler syndrome is a group of hereditary conditions affecting collagen and results in facial abnormalities.

5062.

Define Purkinje fibres?

Answer»

Two special cardiac muscle fibres originate from the auriculo ventricular node and are called the bundle of his which runs down into the interventricular septum and the fibres spread into the ventricles. These fibres are called the Purkinje fibres.

5063.

What are the symptoms of acromegaly?

Answer»

Acromegaly is caused due to excessive secretion of growth hormone in adults. 

The symptoms of acromegaly are:

1. Overgrowth of hand bones, feet bones, jaw bones. 

2. Malfunctioning of gonads. 

3. Enlargement of viscera, tongue, lungs, heart, liver, splean and endocrine glands like thyroid, or adrenal glands.

5064.

In a supersonic flow, a diffuser is a conduit having (a) gradually decreasing area (b) converging-diverging passage (c) constant area throughout its length (d) none of the above.

Answer»

(a) gradually decreasing area 

5065.

A shock wave which occurs in a supersonic flow represents a region in which (a) a zone of silence exists (b) there is no change in pressure, temperature and density (c) there is sudden change in pressure, temperature and density (d) velocity is zero.

Answer»

(c) there is sudden change in pressure, temperature and density 

5066.

Which of the following statements regarding a normal shock is correct ? (a) It occurs when an abrupt change takes place from supersonic into subsonic flow condition (b) It causes a disruption and reversal of flow pattern (c) It may occur in sonic or supersonic flow (d) None of the above.

Answer»

(a) It occurs when an abrupt change takes place from supersonic into subsonic flow condition 

5067.

What are the effects that IPCC has predicted regarding global warming? I. Earth’s temperature will rise by 1-30°C in next few decades, leading to extreme weather changes (heat waves, hurricanes and severe winters), changes in ocean currents and marine life. II. If CO2 concentration doubles, Earth’s temperature may rise by 50°C. III. The biggest glacier in the Peruvian Andes was retreating by 5 meters per year some 20 years ago; today it is shrinking by 33 meters per year. IV. The Arctic Sea ice has thinned by 40% in the last two decades, while Mount Everest is losing height at the rate of 1.5 meters per year. (a) Only I (b) I & II (c) Only III (d) All the above

Answer»

(d) All the above

5068.

It is predicted by the meteorologists that global warming will result in the flooding of oceans due to the melting of ice caps on the earth.1. Name the thermodynamic process involved in the melting of ice.2. Determine the heat energy required to melt 5kg of ice completely at 0°C. Latent heat of fusion of water is 3336 × 103 J Kg-1.3. During the melting process, what change will occur to its internal energy?

Answer»

1. Isothermal process

2. ∆Q = mL = 5 × 33.36 × 105 = 16.68 × 106J

3. Internal energy increases

5069.

When copper ore is mixed with silica in a reverberatory furnace, copper matte is produced. The copper matter contains__________A. sulphide of copper (II) and iron (II)B. sulphide of copper (II) and iron (III)C. sulphide of copper (I) and iron (II)D. sulphide of copper (I) and iron (III)

Answer» Correct Answer - C
Copper matte contains sulphides of copper (I) and iron (II) `(Cu_(2)S*FeS)`.
5070.

Polio vaccine was discovered byA. Issac NewtonB. Marie CurieC. Jonas SalkD. Albert Einstein1. C2. D3. A4. B

Answer» Correct Answer - Option 1 : C

The correct answer is C.

  • The Polio vaccine was discovered by Jonas Salk.

  • Polio is an infectious disease caused mainly by the poliovirus in young children.
  • On April 12 in 1955, Doctor Jonas Salk had declared polio prevention medicine safe and presented it to the world.

Famous Scientist and Their Contribution
ScientistContribution
Issac NewtonLaw of universal gravitation, Laws of motion, The law of binomial theorem.
Albert EinsteinSpecial and general theories of relativity, Explanation of the photoelectric effect.
Marie CurieRadioactivity, Purification of radium, and the discovery of polonium.
5071.

A _______________ is the right given by the government to an inventor to protect his/ her invention from being used/copied for a fixed period of time. a. Copyright b. Intellectual Property c. Patent d. Trademark

Answer»

Correct option is c. Patent

5072.

From the zygote, pluricellular organisms are formed by serial mitosis. Would this formation be possible if each cell made by mitosis had an identical life in relation to its antecedent cells? How did evolution solve that problem?

Answer»

The formation of complex and distinct pluricellular organisms would not be possible if mitosis in embryos produced only daughter cells with an identical life history as the mother cell, since there would not be differentiation and structural or functional specialization among cells.

Evolution solved the problem creating the cellular differentiation process by which, motivated by stimulus not yet well-known by science, different and specialized cell lineages gave birth to different tissues, organs and systems that, as a whole, form the pluricellular organisms.

Cellular differentiation probably is a very intricate process that activates and inactivates some genes within the cell in response to some stimulus.

5073.

What is the logical order in which the concepts of atoms, molecules, cells... up to biosphere are associated?

Answer»

Atoms form molecules that form cells that form tissues that form organs that form systems. Systems, in their turn, constitute individuals that form populations that compound (biological) communities that form the biotic components of ecosystems. All ecosystems of earth form the biosphere.

5074.

What is the typical biological function of the connective tissues? How is this function associated to the main features of its cells?

Answer»

The typical function of the connective tissues is to fill empty spaces among other body tissues.

This function is related to the great capability of the cells of the connective tissue to secrete substances that constitute extracellular material, like collagen and elastic fibers, creating a significant spacing between these cells.

(There are other important biological features of the connective tissues, such as substance transportation, defense of the organism, etc.)

5075.

Write a letter to the Municipal Commissioner of your city about choked drains and piles of garbage in your locality posing threat to public health.

Answer»

A-195
Radhey colony
Ajmer 05 April 2020
The Municipal Commissioner Ajmer

Subject: Complaint against the unsanitary condition.

Sir,

I would like to bring to your kind notice that in our locality, drains have choked and piles of garbage can be seen in several places. For the last six months, drains have not been cleaned. The sweepers don’t clean the streets regularly. Whenever they come, they dump the garbage here and there in the locality itself. This unsanitary condition is posing a serious threat to public health. Kindly instruct the concerned people to take necessary action at the earliest.
We await your action

Thanking you

Yours faithfully,
Srinivas Kumar

5076.

Cinnabar is an ore of which one of the following ?1. Copper2. Zinc3. Mercury4. Manganese

Answer» Correct Answer - Option 3 : Mercury

  • Explanation:
    • Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.
    • Cinnabar is the bright scarlet to a brick-red form of Mercury(II) sulfide (HgS).
    • It is the most common source of ore for refining elemental mercury (Hg)
    • It is the historic source for the brilliant red or scarlet pigment termed vermilion and associated red mercury pigments.

Hence we can conclude that Cinnabar is an ore of Hg.

Metals

Ores

Mercury (Hg)

Cinnabar 

Lead (Pb)

Galena

Tin (Sn)

Cassiterite

Antimony (Sb)

Stibnite

Zinc (Zn)Calamine
Arsenic (As)Arsenopyrite
5077.

If the planes λx + 3y - 7z - 1 = 0 and 5x + 6y - μz = 0 are parallel, then the integral part of λ + μ (i.e., λ + μ) is (A) 15 (B) 17 (C) 14 (D) 16

Answer»

Correct option is (D) 16

Explanation :

The planes are parallel. So 

λ/5 = 3/6 = -7/- μ

λ = 5/2, μ = 14 

Therefore, [λ + μ] = [5/2 + 14] = [32/2] = 16

5078.

Prove the following rules using the proof of perfect inductiona. XY’ + XY = Xb. X + Y = Y + X

Answer»

a. XY’ + XY = X

By proof of perfect induction X = 0, Y =1 XY’ + XY = X

LHS = 0.0 + 0.1±0 + 0 = 0

By proof of perfect induction X = 1, Y = 0 LHS = 1.1+ 1.0 = 1 + 0 = 1

b. X + Y = Y + X

By proof of perfect induction X = 0, Y = 1 LHS = 0 + 1 = 1 RHS = 1 + 0 =1 LH S = RHS

By proof of perfect induction X = 1, Y = 0 LHS = 1 + 0 = 1 RHS = 0 + 1 = 1 LHS = RHS

5079.

What is domain affiliation?

Answer»

A domain affiliation means the type of domain whether it is commercial (.com), education (.edu) or government (.gov), etc.,

5080.

What is XML?

Answer»

XML is a extended Markup Language for documents containing structured information. XML is a text-based markup language becoming the standard for data interchange on the web.

5081.

Give an example for a Boolean expression the sum of minterms form and product of maxterm form.

Answer»

The example for boolean expression in the sum of minterms form is X’Y’ + XY’ +XY =Z. The example for Boolean expression in the product of max terms form is x’+y’. x+y’ + x+y =z.

5082.

Use the duality theorem to derive another boolean relation from : A + A’B = A + B

Answer»

A.(A’ +B) = A.B

5083.

Evaluate the following expressions:a) 6 * 3 + 4**2 // 5 – 8b) 10 > 5 and 7 > 12 or not 18 > 3

Answer»

(a) 6 * 3 + 4 ** 2//5 - 8

= (6 * 3) + (4 ** 2//5) - 8

= 18 + 3 - 8

= 21 - 8

= 13

(b) False

10 > 5 and 7 > 12 or not 18 > 3

10 > 5 = True

7 > 12 = False

18 > 13  = True

Now, T AND F or NOT True

T AND F = F, NOT True = F

Then, F or F = F

5084.

state and verify distributive law algebraically in Boolean Algebra

Answer»

Distributive Law states that the multiplication of two variables and adding the result with a variable will result in the same value as multiplication of addition of the variable with individual variables. 

For example:
A + BC = (A + B) (A + C).

5085.

Write a program using loop that asks the user to enter an even number. If the number entered is not even, then display an appropriate message and ask them to enter a number again. Do not stop until an even number is entered. Print a Congratulatory Message at end

Answer»

while True:
    a=int(input("Enter an even number : "))
    if a%2!=0:
        print("Entered number is not even!")
    elif a%2==0:
        print("Congratulations!")  
        break  

Have a nice day :)

5086.

What is free electron theory of conduction

Answer»

The explanation for free electrons in a conductor:

  • A free electron is one that is not bound to an atom.
  • A conductor is a substance or material that allows electricity to flow through it.
  • Metal atoms have loose electrons in the outer shells which form a free negative charge around the closed packed positive ions.
  • These loose electrons are called free electrons in a conductor.
  • They can move freely throughout the metallic structure.
  • These free electrons move through the substance and are responsible for carrying heat and electric current.
5087.

how are the officer in Administrative Services appointed

Answer»

the officer in the Administrative Services were appointed through competitive examination known as Indian Civil Service (ICS) 

5088.

what is mean by scattering of light

Answer»

when negative charge of clouds and the land of depositive charge will cross with each other than this scattering of light means which padne is called scatering of light

5089.

essay on will India become world leader in 2025

Answer»

we are going to celebrate 75th Independence day we celebrate Azad the come Amrit Maan which is Institute of the Government of India to celebrate the comet 75 years of independence of progressive India and history of its people and achievement the week leading of the 15th August Landmark day of your Independence it is the day when we feel the love for our country we should celebrate this day with low and Pride for our nation says it remind every India about the new beginning the beginning of the era of deliverance from the clothes of British colonialism more than 200 years many freedom fighters who sacrifice their lives

5090.

A uniform disk of mass `300kg` is rotating freely about a vertical axis through its centre with constant angular velocity `omega .` A boy of mass `30kg` starts from the centre and moves along a radius to the edge of the disk. The angular velocity of the disk now isA. `(omega_(0))/(6)`B. `(omega_(0))/(5)`C. `(4omega_(0))/(5)`D. `(5 omega_(0))/(6)`

Answer» Correct Answer - D
As `Sigma tau =0` , angular momentum remains conserved `:`
`:. L=(0+(300R^(2))/(2))`
`omega_(0)=((300R^(2))/(2)+30R^(2)).omega`
`=150 omega _(0)=180 omega`
`rArr omega = 5/6 omega _(0) Ans. `
5091.

A disk is fixed at its centre O and rotating with constant angular velocity `omega`. There is a rod whose one end is connected at A on the disc and the other end is connected with a ring which can freely moce along the fixed vertical smooth rod. At an instant when the rod is making an angle `30^(@)` with the vertical the ring is found to have a velocity v in the upward direction. Find `omega` of the disk. Given that the point A is `R//2` distance above point O and length of the rod Ab is `l` A. `(v sqrt3)/(2 l)`B. `(v sqrt3)/(2R)`C. `(2sqrt3v)/(R )`D. `(2v)/(l sqrt3)`

Answer» Correct Answer - C
5092.

A smoothh disc is rotating with uniform angular speed `omega` about a fixed vertical axis passing through its centre and normal to its plane as shown. A small block of mass m is gently placed at the periphery of the disc. Then (pickup the correct alternative or alternatives) A. In comparision to `omega` the angular speed of the disc now increasesB. in comparision to `omega` the angular speed of the disc now decreasesC. in comparision to `omega` the angular speed of the disc now remains sameD. the block will move tangentially and fall of the disc.

Answer» Correct Answer - B
the only force block exerts on disc is parallel to axis of rotation of disc. This additional of disc. This additional force does not cause any torque on disc. Hence angular momentum of disc remains same.
Since there is no friction between block and disc, the block remains in its position.
5093.

For the given circuit the current through battery of 6 V just after closing the switch ‘S’ will be ….… A.

Answer»

Correct answer is 1

Just after closing the switch S, inductor behaves like an open circuit

I = 6/ 2+4 = 1 A

5094.

Change in entropy during complete cycle of Carnot’s engine is

Answer»

The change in entropy is equal to the ratio of the heat absorbed and the temperature at which the heat was absorbed.

5095.

Transistor acts as a switch in :(1) Active region(2) Saturation & cut off region(3) cut off region only(4) saturation region only 

Answer»

(2) Saturation & cut off region

5096.

Electric flux passing through given hemisphere if charge is placed at center of hemisphere is :(1) q/2ε0(2) q/ε0(3) q/4ε0(4) none

Answer»

Correct option is (1) q/2ε0

For complete sphere total flux passing through the sphere is = q/ε(using gauss's law)

so flux passing through given hemisphere is ϕ = \(\cfrac{\frac{q}{ε_ 0}}{2}=\cfrac{q}{2{ε_0}}\)

5097.

The normal range of plasma calcium is (A) 3-5 mg/dl (B) 5-10 mg/dl (C) 9-11 mg/dl (D) 11-15 mg/dl

Answer»

(C) 9-11 mg/dl

5098.

The normal range of plasma copper is (A) 25–50 µg/dl (B) 50–100 µg/dl (C) 100–200 µg/dl (D) 200–400 µg/dl

Answer»

(C) 100–200 µg/dl

5099.

Plasma zinc level is (A) 10–50 µg/dl (B) 50–150 µg/dl (C) 150–250 µg/dl (D) 250–500 µg/dl 

Answer»

(B) 50–150 µg/dl 

5100.

Normal plasma iron level is (A) 50100 µg/dl (B) 100150 µg/dl (C) 50175 µg/dl (D) 250400 µg/dl

Answer»

(C) 50175 µg/dl