Explore topic-wise InterviewSolutions in .

Answer is (3)

At constant temperature and pressure V ∝ n ⇒ Avagadro's law not Dalton's law.

Answer is (3) (3) when gases combine or reproduced in a chemical reaction they do so in a simple ratio by volume provided all gases are at the same T & P. 

Option(3) is according to Gaylussac's law of volume combination.

a) Attribution theory

(1) (i) – (P) (ii) – (Q) (iii) – (R) 

Correct options are:

(A) (A), (B) and (C) are correct

(B) (B), (C) and (D) are correct

(C) (A), (C) and (E) are correct

Bona - 5 is copolymer of butadiene + styrene 

Nylon 6.6 is condensation polymer of adipic Acid and hexanediamine. 

Nylon 6.6 is fiber 

Terylene is fiber not themosetting polymer 

Buna-N is copolymer nol Homopolymer.

Answer is (1)

Distilled water have lowest ionic conductance.

Answer is (1) Distilled water 

The form of H₂O with the lowest ionic conductance at 298 K is distilled water.

Answer is (3)

Lithium has highest hydration enthalpy among alkali metals due to its small size.

LiCl is soluble in pyridine because LiCl have more covalent character.

Li does not form ethynide with ethyne. Both Li and Mg reacts slowly with H₂O

Answer is (3) 

(B) Kidney and intestine

The answer is (2) The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water.

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water, is called Biochemical Oxygen Demand (BOD).

Answer is (3)

Biochemical oxygen demand (BOD) is amount of oxygen required by bacteria to break down organic waste in a certain volume of water sample.

Answer is (3)

can be right if inorganic waste is replaced by organic waste.

Selenium is a constituent of the enzyme glutathione peroxidase, which inactivates toxic hydrogen peroxide and hydroperoxides.

2-butanol on oxidation gives ethyl methyl ketone.

1 (B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.

2 (B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.

3 (A) Assertion and reason both are correct statements and reason is correct explanation for assertion.

4 (C) Assertion is correct statement but reason is wrong statement.

1 (D) Assertion is wrong statement but reason is correct statement.

2 (B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.

3 (A) Assertion and reason both are correct statements and reason is correct explanation for assertion.

4 (B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.

5 (A) Assertion and reason both are correct statements and reason is correct explanation for assertion.

Correct option is B) too

Correct option is C) as strong

Correct option is D) besides

Correct option is A) Besides

Leaf spot, dieback, wilt, damping off of seedlings, botrytis rot.

Correct option: b) Horticulture

(a) Propagation: 

Carnation (D.caryophyllus) for cut flower is multiplied through cuttings. There are annual carnations that are multiplied by seeds. These annual carnations are suitable as potted ornamental plants. D.chinensis and D. barbatus are multiplied through seeds. 

(b) Planting time: 

Planting can be done in different spacing. Normally, 30-45 plants per m2 are considered to be ideal. The different spacing followed based on branching habit of the plant is 15 x 8cm, 15 x 10cm, 15 x 15cm and 15 x 20cm. In case information is lacking about the plant habit 15 x 20cm spacing can be conveniently followed. Alternate planting in adjacent rows is beneficial in terms of reduced incidence of disease. 

(c) Nutrition:

 For the first three weeks after planting, plant does not require any fertilizer. Nitrogen, Phosphorous and Potash is 30:20:30 gm per m2 per year. A basal dose of 20:20:10gm/ m2 is given at the time of planting. Remaining fertilizer is applied in equally distributed dosage over. 

(d) Pinching: 

When the plant attains six nodes, the first pinch is given. This is referred as ‘single pinch’. This would give rise to six laterals In a ‘one and half pinch’; 2-3 of these lateral shoots are pinched again. For the ‘double pinch’, all the lateral shoots are pinched off. Ideal time for pinching is morning.

This relay is a static single phase, single step, and distance protection with MHO offset MHO characteristic. With suitable current/voltage input selection, the relay can be made to have the required character in the R-X plane for various applications such as Generator Field failure protection, Generator backup impedance protection and as offset MHO relay for use in conjunction with generator pole slipping protection.

This gear mainly used to control the steam flow so as to limit the machine from over speeding. On following occasions, the over speed limiting gear acts. 

a) When the flow of steam corresponds to load is 2/3 and

b) Electrical power on generator falls 1/3 of full load. 

To ensure that the turbine load never exceed the reactor output, to incorporate turbine follow reactor feature governing system. 

To have high starting torque.

In AC motors torque is directly proportional to φ (flux), I₂ and cosφ₂.

i.e T ;φ (flux* I₂ * cos φ₂. 

∴ T = k * φ (flux)* I₂ * cos φ₂.

Rotor at standstill E₂;φ (flux) 

∴ T = k * E2 * I₂ * cos φ₂.

In double squirrel cage motor inner cage is low resistive and high inductive. The outer cage is high resistive and low inductive. In case of inner cage Z (impedance) is less (X_L = 2π f L). If the rotor is having high inductance at starting I2 will lag E2 by large and cos φ₂ (Rotor PF = R₂ / Z₂) is very less. So torque is less.

At staring rotor torque is proportional to the rotor resistance. At starting inductance is high and the Z is

Start rotor from rest.

Eliminates sag in rotor - straighten and avoid rubbing at glands. 

Avoid direct contact journals and bearings. 

Avoid differential temp between top and bottom of cylinder due to convection of Steam or hot air inside turbine cylinders. 

what is value of theta 1

To bring the turbine to synchronous speed and get tight lock with grid by grid frequency. BPC signal is given in Auto mode to the speeder gear motor. 

On 2560 rpm turbine governor becomes effective and on 2760 rpm is turbine governor take over speed. 

Tandem compounded to expansion of steam, impulse reaction type. 

L is length of conductor A is area of cross section.

And ρ is resistivity of material of conductor and it is the measure of opposition offered to current flow by that conductor material.

L is length of conductor A is area of cross section.

And ρ is resistivity of material of conductor and it is the measure of opposition offered to current flow by that conductor material.

The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation. The other types of EM radiation that make up the electromagnetic spectrum are microwaves, infrared light, ultraviolet light, X-rays and gamma-rays.

Radio: Your radio captures radio waves emitted by radio stations, bringing your favorite tunes. Radio waves are also emitted by stars and gases in space.

Microwave: Microwave radiation will cook your popcorn in just a few minutes, but is also used by astronomers to learn about the structure of nearby galaxies.

Infrared: Night vision goggles pick up the infrared light emitted by our skin and objects with heat. In space, infrared light helps us map the dust between stars.

Visible: Our eyes detect visible light. Fireflies, light bulbs, and stars all emit visible light.

Ultraviolet: Ultraviolet radiation is emitted by the Sun and are the reason skin tans and burns. "Hot" objects in space emit UV radiation as well.

X-ray: A dentist uses X-rays to image your teeth, and airport security uses them to see through your bag. Hot gases in the Universe also emit X-rays.

Gamma ray: Doctors use gamma-ray imaging to see inside your body. The biggest gamma-ray generator of all is the Universe.

Answer is (2) 20 A

Total power is (15 × 45) + (15 × 100) + (15 × 10) + (2 × 1000)

= 4325 W

So current is = 4325/220 19.66 A

Answer is (1)

For process A – B; Volume is constant ; 

PV = nRT ; as P increases; T increases 

For process B – C; 

PV^γ = Constant ; 

⇒ TV^γ–1 = Constant 

For process C – A ; pressure is constant 

V = kT

(c) Statement-1 is true, statement-2 is false.

(3) Statement-1 is false, Statement-2 is true

Correct option is (1) Statement-1 is True, Statement 2 is True; Statement-2 is a correct explanation for Statement-1

x\(\frac{dy}{dx}+\frac{2y}x=\frac1{x^3}\)

⇒ \(\frac{dy}{dx}+\frac{2}{x^2}y=\frac1{x^4}\) which is linear differential equation.

∴ I.F. = \(e^{\int\frac2{x^2}dx} = e^{\frac{-2}x}\)

y x I.F. = \(\int\frac1{x^4}(I.F)dx\)

⇒ y. e\(\frac{-2}x\) = \(\frac{e^{\frac2x}}{x^4}dx\)

Let \(\frac{-2}x=t\)

⇒ \(\frac2{x^2}dx=dt\)

∴ ye^{\(\frac{-2}x\)}  = \(\frac12\int\frac{t^2}4e^tdt\)

 = \(\frac18\)(t²e^t - 2te^t + e^t) + c

 = \(\frac18\)(t² - 2t + 1)e^t + c

left part

y.e^-2/x = \(\frac18\)(t - 1)²e^t + c

⇒ ye^-2/x = \(\frac18\) (-2/x - 1)²e^{-2/x + c} ( ∵ t = -2/x)

⇒ y = \(\frac18\)(2/x + 1)² + ce^2/x which is general solution of given differential equation.

∵ f is continuous at x = 0.

Then f(0) = \(\underset{x\rightarrow0}{lim}\) f(x)

⇒ \(\underset{x\rightarrow0}{lim}\) \(\frac{1-cos\,kx}{x\,sin\,x}\) = 1/2

⇒ \(\underset{x\rightarrow0}{lim}\) \(\frac{k\,sin\,kx}{x\,cos\,x+sin\,x}\) = 1/2 (By D.L.H. Rule)

⇒ \(\underset{x\rightarrow0}{lim}\) \(\cfrac{k^2x\,\frac{sin\,kx}{kx}}{x(cos\,x+\frac{sin\,x}x)}\) = 1/2

⇒ \(\underset{x\rightarrow0}{lim}\) \(\cfrac{k^2\times\frac xx\times\frac{sin\,kx}{kx}}{cos\,x+\frac{sin\,x}x}\) = 1/2

⇒ k² \(\cfrac{\underset{kx\rightarrow0}{lim}\frac{sin\,kx}{kx}}{\underset{x\rightarrow0}{lim}\,cos\,x+\underset{x\rightarrow0}{lim}\,\frac{sin\,x}x}\) = 1/2

⇒ \(\frac{k^2\times1}{cos\,0+1}\) = 1/2 (∵ \(\underset{x\rightarrow0}{lim}\) sinx/x = 1)

⇒ k²/2 = 1/2

⇒ k² = 1

⇒ k = ±1

for k = 1 or k = -1, the given function f(x) is continuous.