Explore topic-wise InterviewSolutions in Current Affairs.

self employment

1. India is an agricultural country. 

2. Agriculture and its allied activities act as main source of livelihood for most of the rural population of India.

3. Government of India is aware about the need of boosting institutional credit in rural economy. 

4. The RBI constituted a Committee to review the arrangements for Institutional Credit for Agricultural and Rural Development under the Chairmanship of Shri B. Sivaram, to take review of agricultural credit in India. 

5. The recommendation of the Committee was accepted and National Bank for Agriculture and Rural Development came into existence on July, 12 1982 under the special Act of the Parliament, with an objective of providing credit and other facilities for the development of agriculture. 

6. Thus, we can say the NABARD has been recognized as an apex institution for agricultural finance.

Correct answer is (a) biosphere

(a) Thaw and saw means that she will reduce you to nothing. 

(b) The tone of the poetess is a caution about careful intervention.

Correct option: (B) 18 moles of water

1 mole of water = 18 g of water

6.022 x10²³ molecules of water

∴ 18 moles of water = 18 x 6.022 x 10²³ molecules of water

= 1.08396 x 10²⁵ molecules of water

Correct option: (C) 4

100 g of haemoglobin contains 0.33 g of Fe

∴ 67200 g of haemoglobin contains

\(\cfrac{67200\, \times\, 0.33}{100}\)

= 221.76 g of Fe.

Number of atoms of Fe = \(\cfrac{221.76}{56}\)

= 3.96 ≈ 4

(i) 6XeF₄ +12H₂O→ 4Xe + 2XeO₃ + 24HF + 3O₂ 

(ii) Ca₂P₂ + 6H₂O→3Ca (OH)₂ + 2PH₃ 

(iii) AgCl(s) + 2NH_{3 (aq)}→[Ag(NH₃)₂]Cl_(aq)

Correct Answer is: (b) 2 : 1 

Correct Answer is: (b) increase by about 11% 

Correct Answer is: (a) RC

The resistance in the middle plays no part in the charging process of C, as it does not alter either the potential difference across the RC combination or the current through it. 

Correct Answer is: (b)

This is basically an RC circuit, charging from a cell. The resistance (R) of the voltmeter is the resistance in the circuit. The voltage across R = circuit current x R = reading of the voltmeter (V). Thus, the nature of the V–t curve is the same as the nature of the I-t curve.

Correct Answer is: (b, d)

The voltmeter reading is the potential difference across its terminals when it is connected in the circuit. The ammeter reading is the current passing through it. 

(a) Tiny bubbles appeared due to the evolution of air dissolved in water.
(b) No, tiny bubbles will not appear as there is no dissolved air in this water.

It holds good, when a wire is loaded within its elastic limit.

The elastic substances which can be subjected to a large value of strain, are called elastomers.

Nature of the material and the manner in which it is deformed.

The elastic fatigue is defined as the loss in the strength of a material caused due to repeated alternating strains to which the material is subjected.

Due to weak attractive forces between the carbon atoms, the atomic planes easily get laterally displaced with respect to each other, when a small tangential stress is applied, since

Modulus of rigidity (η) = tangential stress/shear strain

graphite possesses a small value of the modulus of rigidity

Copper -  more work will have to be done

Is stress a vector quantity - No

Correct Option  (c) 4π²

Explanation:

Since n = 2 , ω = 2π x 2 = 4π rad/s²

So acceleration = ω²r = (4π)² x 25/100 m/s² = 4π²

Negative vector: The negative of a vector is defined as another vector having the same magnitude but having an an opposite direction.

Zero vector: A vector having zero magnitude and an arbitrary direction is called zero or null vector.

Mass, m = 1500 kg.

Initial velocity, u = 60 kmh^-1

= 60 × \(\frac{5}{18}\) = 16.67 ms^-1

Final velocity, v = 0

(∵ the car comes to rest)

Work done to stop the car = change in kinetic energy

= Final kinetic energy – Initial Kinetic energy

= \(\frac{1}{2}\)mv² - \(\frac{1}{2}\)mu²

= \(\frac{1}{2}\) x 1500 x (0)² - \(\frac{1}{2}\) x 1500 x (16.67)²

= \(\frac{1}{2}\) x 1500 x (16.67)²

= 208333.331 J

Given

Mass of car = 500 Kg

Initial speed = 36 km/h = 10m/s

(∵ 1 km/h = 5/18 m/s)

Now

Work done = Change in Kinetic Energy.

= Final kinetic Energy – Initial Kinetic Energy.

= \(\frac{m(v^2-u^2)}{2}\)
= \(\frac{500(0-10^2)}{2}\)  (Final velocity = 0, because the car is at rest).
= 250 x -100 = -25000 J.

The magnitude of work required is 25000 Joule.

v²/r = 40 x 40/160 = 10 ms^-2.

The elephant came from Mysore and it was sent to Japan by sea.

The elephant came from Mysore and it was sent to Japan by sea.

The word ‘there’ refers to the countries of United States of America, Canada and England and ‘here’ stands for India.

Children all over the world outwardly are different as they speak different languages andwear different kinds of clothes. But they are very like one another as they play and quarrel like.

The word ‘there’ refers to the countries of United States of America, Canada and England and ‘here’ stands for India.

Children all over the world outwardly are different as they speak different languages and wear different kinds of clothes. But they are very like one another as they play and quarrel like.

(a) the maximum potential energy equals the maximum kinetic energy 

(b) the minimum potential energy equals the minimum kinetic energy

EXPLANATION: 

Minimum P.E. and minimum K.E. are respectively at the mean position and at the extremes (equal to zero). And their maximums are just at the opposite points (equal to m⍵²A². So (a) and (b) are not true and (c), (d) are true.

A short circuit is an electrical circuit that allows a current to travel along an unintended path with no or a very low resistance. This results in an excessive amount of current flowing into the circuit

A common type of short circuit occurs when the positive and negative terminals of a battery are connected with a low-resistance conductor, like a wire. With a low resistance in the connection, a high current will flow, causing the delivery of a large amount of energy in a short period of time

Fuse is used for protecting appliances due to short-circuiting or overloading. The fuse is rated for a certain maximum current and blows off when a current more than the rated value flows through it. 

If a fuse is replaced by one with larger ratings, the appliances may get damaged while the protecting fuse does not burn off. This practice of using fuse of improper rating should always be avoided.

n our country the potential difference is 220 V and the frequency is 50 Hz. It is different for the different countries. And the potential difference is between the live wire and the neutral wire.

Red, black and green.

Direct current always flows in one direction but the alternating current reverses its direction periodically. Also, the magnitude of current in case of DC is same throughout whereas in case of AC, it changes continuously. The frequency of AC in India is 50 Hz and in each cycle, it alters direction twice. Therefore, AC changes direction 2 x 50=100 times in one second.

The strength of magnetic field is higher in this region.

Fleming' right-hand rule is used to find out the direction of the current induced in coil due to its rotation in a magnetic field. 

According to Fleming’s right-hand rule: 

•If we put our thumb, index finger and middle finger mutually perpendicular to each other. 

•Such that thumb points in the direction of the motion of conductor and index finger point in the direction of the applied magnetic field. 

•Then middle/centre finger will show the direction of the induced or generated current within the conductor.

Helmholtz’s coil.

Various sources to produce magnetic field are:
magnet, current carrying conductor, moving charge, change in electric field.

(a) to generate uniform magnetic field
Helmholtz coils are used to generate uniform magnetic field.

(i) The bulb lights due to the mutual induction. The emf is produced in the conductor when the magnetic flux linked with the conductor changes. Due to this emf the bulb gets lighted. 

(ii) When the coil P is move upwards the magnetic flux linked with the coil gets decreased due to which the induced emf gets decreased, hence the bulb gets dimmer

(B) The end Y of the rod becomes positively charged. 

Correct option  (A) Direction of current is same and its magnitude is larger in X than in Y.

Explanation:

The needles of the plotting compasses show that both conduct current into the page with different magnitudes. At A and B, direction of magnetic field is same, hence current in X is larger than in Y.

When the live wire of a faulty appliance comes in direct contact with its metallic case, which has been earthed, the large current passes directly to the earth without passing through the user’s body. Thus, it is necessary to earth the metallic bodies of electrical appliances so as to avoid fatal electric shocks.

(i) (a) It is not available at all times.
    (b) It requires a very large area of land.

    (c) it is not possible to have a windmill everywhere as to run it, the minimum wind speed of 15 km/hr is required (only possible in open areas like the seaside).
(ii) (a) Wave energy would be a viable proposition only where waves are very strong.
(b) It is costly to set up devices to trap wave energy.
(iii) (a) Very few sea coasts in the world have suitable sites for the purpose of harnessing tidal energy.
(b) The rise and tall of tides happen only twice in a day and is not suffcient to generate electricity coutinuously.

1. Some organisms grow on dead and decaying matter. 

2. They secrete digestive juices on it convert it into a solution and then absorb the nutrients from it. 

3. This mode of nutrition in which organisms take in nutrients in the form of solution from dead and decaying; matter is called saprophytic nutrition. 

4. Generally we see this saprophytic nutrition in certain microorganisms such as bacteria and fungi like mushrooms, bread mould etc.