Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Which is linked to discovery of Bordeaux mixture as fungicide ?A. Loose smut of wheatB. Black rust of wheatC. Bacterial leaf blight of riceD. Downy mildew of grapes

Answer» Correct Answer - D
Bordeaux mixtrue is the first inorganic fungicide which was developed oby bRMA millardet (1882) against downy mildew (plasmoplar viticalo) of grpae vine at the university of Bordeux. It consists of copper II suphate `CuSo_(4)` slaked lime and water
2.

The British government Jim Corbett to help the villagers. (a) advised (b) ordered (c) commanded (d) requested

Answer»

(d) requested

3.

In lake test for Al3+ ions, there is the formation of coloured ‘floating lake’. It is due to: (a) Absorption of litmus by [Al(OH)4] - (b) Absorption of litmus by Al(OH)3 (c) Adsorption of litmus by [Al(OH)4] - (d) Adsorption of litmus by Al(OH)3

Answer»

Answer is (d) Adsorption of litmus by Al(OH)3

In lake test for Al3+ ions, there is the formation of coloured ‘floating lake’ In lake test for Al3+ ions, there is the formation of coloured ‘floating lake’ due to adsorption

4.

Water retention or puffiness due to high salt intake occurs due to: (a) diffusion (b) vapour pressure difference (c) osmosis (d) reverse osmosis

Answer»

Answer is (c) osmosis

5.

Find the word which is out of the logic list:A) rescue B) slaughter C) kill D) murder

Answer»

Correct option is A) rescue

6.

Which of the following enhances the lathering property of soap?(A) Sodium stearate(B) Sodium carbonate(C) Sodium rosinate(D) Trisodium phosphate

Answer»

Correct option is (C) Sodium rosinate

Rosin is added to soaps which forms sodium rosinate which lathers well.

7.

किसी विद्युत व्दिध्रुव का नेट आवेश शून्य होता हैं , लेकिन इसका व्दिध्रुव - आपूर्ण अशून्य होता हैं । बिंदु A तथा B पर स्थित (-q) तथा (+ q) आवेश के सरल निकाय के लिए चित्र से `(-q)vec(r_(1)) + (+ q) vec(r_(2)) = q(vec r_(2) - vec(r_(1))) = q vec(r) = vec (P)` = व्दिध्रुव - आघूर्ण सदिश । व्यापक रुप से यदि आवेश के वितरण में नेट आवेश शून्य हो , तो उस निकाय का व्दिध्रुव - आघूर्ण सदिश रुप से परिभाषित होता हैं : आवेश के असंतत (discrete) वितरण के लिए , `vec(P) = sum vec(r_(i) q_(i)) तथा आवेश के संतत ( continuous) वितरण के लिए , `vec(P) = int vec(r_(i))dq_(i).` XY - तल में स्थित त्रिज्या R के एक आवेशित रिंग का केंद्र - मूलबिंदु o पर स्थित हैं तथा इसके आवेश का रैखिक घनत्व `lamda`, कोण `theta` के फलन के रुप में संबंध `lamda (theta) = b cos theta` से व्यक्त होता हैं । आवेशित रिंग का विद्युत व्दिध्रुव - आघूर्ण हैं A. `pibR^(2)hati`B. `pibR^(2)hatj`C. `2pibR^(2)hati`D. `2pibR^(2)hatj`

Answer» Correct Answer - A
कोण `theta` की दिशा में अल्पांश (`Rd theta` ) पर आवेश .
अतः , परिभाषा से ,
`vec (P) = int^(vec) r dq = int_(0)^2(pi) (Rcos theta hati + R sin theta hat j) Rb cos theta . d theta` ,
`= bR^(2) int_(0)^2(pi) (cos ^(2) theta*hati + sin thetacos theta * J) d theta = (pi)bR^(2)hati.`]
8.

‘In recent years India has paid adequate attention to ASEAN’. Give two points to justify the statement.ORExplain ‘Miracle on the Han River’.

Answer»

In recent years India has paid adequate attention to ASEAN- 

(a) The ASEAN-India Free Trade Agreement came into effect in 2010. 

(b) On January 25th, 2018, silver jubilee of India and ASEAN partnership was commemorated. Leaders released postal stamps to mark the event.

OR

Miracle on Han River- 

(a) South Korea emerged as a center of power in Asia. 

(b) Between the 1960s and the 1980s, it rapidly developed into an economic power, which is termed as 'Miracle on the Han River'.

9.

South Asia stands for diversity in every sense and yet constitutes one geo-political space. Do you agree with the statement? Give two reasons for your answer.

Answer»

(a) The mighty Himalayas in the north and the vast Indian Ocean, the Arabian Sea and the Bay of Bengal in the south west and east respectively provide a natural insularity to the region which is largely responsible for the linguistic, social and cultural distinctiveness of the subcontinent. 

(b) The various countries in South Asia do not have the same kind of political systems but democracy has become an accepted norm in this region. 

Thus, yes, South Asia stands for diversity in every sense and yet constitutes one geo- political space.

10.

American involvement in South Asia has rapidly increased after the Cold War. Give two examples to illustrate.

Answer»

(a) The United States has had good relations with both India and Pakistan since the end of the Cold War and increasingly works as a moderator in India- Pakistan relations.

(b) The Economic reforms and liberal economic policies in both the countries have greatly increased the depth of American participation in the region. 

(c) The large South Asian Diasporas in the US and the huge size of the population and markets of the region also give America an added stake in the future of regional security and peace. 

11.

Why do you think India is now considered as an important centre of power?

Answer»

The 21st century India is being seen as an important emerging global power-

(a) The economic, cultural and strategic position of the country with the population of more than 135 crores is very strong. 

(b) From a strategic perspective, the military of India is selfsufficient with indigenous nuclear technology, making it another nuclear power. 

(c) From an economic perspective, targeting the goal of a $5 trillion economy, a competitive huge market, and ancient inclusive culture with 200 million people of Indian diaspora spreading across the globe impart distinct meaning and salience to India as a new center of power in the 21st century.

12.

why do you think India is now considered as am important center of power?

Answer»

The 21st century India is being seen as an important emerging global power-

(a) The economic, cultural and strategic position of the country with the population of more than 135 crores is very strong.

(b) From a strategic perspective, the military of India is selfsufficient with indigenous nuclear technology, making it another nuclear power.

(c) From an economic perspective, targeting the goal of a $5 trillion economy, a competitive huge market, and ancient inclusive culture with 200 million people of Indian diaspora spreading across the globe impart distinct meaning and salience to India as a new center of power in the 21st century.

13.

Discuss shah commision in your words

Answer»

Shah Commission was a commission of inquiry appointed by Government of India in 1977 to inquire into all the excesses committed in the Indian Emergency (1975 - 77). It was headed by Justice J.C. Shah, a former chief Justice of India.

14.

Discuss Lenin’s theory of Imperialism

Answer»

Lenin argued that imperialist expansion allowed capitalism to postpone its inevitable crisis and metamorphose into socialism. It also created new, serious problems for the world. Lenin viewed World War I as an imperialist war, caused by tensions that arose from the simultaneous expansion of several European empires.

15.

PRI system in India?

Answer»

Panchayati Raj Institution (PRI) is a system of rural local self-government in India

  • Panchayati Raj Institution (PRI) is a system of rural local self-government in India.
  • Local Self Government is the management of local affairs by such local bodies who have been elected by the local people.
  • PRI was constitutionalized through the 73rd Constitutional Amendment Act, 1992 to build democracy at the grass roots level and was entrusted with the task of rural development in the country.
  • In its present form and structure PRI has completed 26 years of existence. However, a lot remains to be done in order to further decentralization and strengthen democracy at the grass root level.
16.

What is Dual party system? Give example

Answer»

In some countries power usually changes between two main parties. Several other parties may exist contest elections and win a few seats in the national legislatures. But only two main parties have a serious chance of winning majority of seats to form government. Such a party system is called bi-party or two party system. For example the United States of America The United Kingdom.

17.

Write down three types of no ball.

Answer»

1. Front Foot No Ball – Overstepping by the Bowler:

A front foot no ball is the most common type of a no ball that you will see taking place in a game of cricket. This usually happens when a bowler by mistake steps over the bowling crease while delivering the ball.

2. No Ball if Ball Bounces Over Batsman’s Head:

This is another common type of no ball that we get to see during a cricket match.

Bowling a bouncer or a short pitched delivery is a common strategy in getting a batsman dismissed in cricket. However, sometimes the ball just bounces a bit too much in a manner that it goes over the top of the batsman’s head.

3. No Ball if Bowler Bowls a Beamer:
Another type of a no ball is when a bowler ends up bowling a beamer at the batsman.

A beamer is a type of delivery in cricket that reaches the batsman directly without bouncing on the pitch and at least above the height of the waist of the batsman.

18.

Russia is a powerful state on the global stage Do you agree with the view Explain with reasoning?

Answer»
yes I agree
becoz..... Russia is the most powerful country

19.

Welfare function of state

Answer»

The welfare state is a way of governing in which the state or an established group of social institutions provides basic economic security for its citizens. By definition, in a welfare state, the government is responsible for the individual and social welfare of its citizens.

20.

Part _______ of the Indian Constitution deals with fundamental rights.

Answer»

Article 12 to 35 contained in Part III of the Constitution deal with Fundamental Rights.

21.

Assertion: The micro- organisms, comprising bacteria and fungi, breakdown the dead remains and waste products of organisms.Reasons: Decomposers break-down the complex organic substances into simple inorganic substances that go into the soil and are used up once more by the plants.a) Both A and R are true, and R is correct explanation of the assertion.  b) Both A and R are true, but R is not the correct explanation of the assertion.  c) A is true, but R is false.  d) A is false, but R is true.

Answer»

(a) Both A and R are true, and R is correct explanation of the assertion.  

22.

During summer, if you go near the lake, you feel relief from the heat, why?

Answer»

Air near water bodies is cooled due to evaporation of water. So we feel relief from the heat

23.

Assertion: The process of copying the DNA will have some variations each time. Reasons: No bio- chemical reaction is absolutely reliable.a) Both A and R are true, and R is correct explanation of the assertion. b) Both A and R are true, but R is not the correct explanation of the assertion. c) A is true, but R is false. d) A is false, but R is true.

Answer»

(a) Both A and R are true, and R is correct explanation of the assertion. 

24.

How is the life of organisms living in water affected when water gets polluted?

Answer»

Addition of undesirable chemicals like pesticides, fertilizers, industrial waste and domestic wastes not only kill the organisms, they also cause diseases to the aquatic organisms. Besides, the requirement of oxygen by aquatic organisms is also increased. There is a reduction in the dissolved oxygen in water which adversely affects the aquatic organisms.

25.

Define transpiration. Write its two function.

Answer»

Transpiration: The evaporation of excess water from the stomata present in leaves of plants is called transpiration. 

Functions: 

(i) important for upward movement of water in plants. 

(ii) helps in regulating temperature of plant. 

(iii) helps in movement of xylem sap, which also increases the absorption of minerals nutrients by the roots from the soil.

26.

What is solnenoid

Answer»
A solenoid is a coil of wire bound across a corkscrew-shaped piston, usually made of iron.The total magnetic field produced by the solenoid can be defined as the amount of vector force provided by each such turn, and the total magnetic field created by the solenoid is equal to that formed by a circular loop.

27.

How water gets polluted? Is food chain affected in the process?

Answer»

Various causes of water pollution:

• Industrial waste 

• Sewage and waste water 

• Mining activities 

• Marine dumping 

• Accidental oil leakage 

• The burning of fossil fuels 

• Chemical fertilizers and pesticides 

• Leakage from sewer lines. 

• Leakage from underground storage tanks for liquids like gasoline. 

• Contamination of water causes disruptions of food chains and destruction of ecosystems. A deadly by product of this water pollution is the spread of water- borne diseases such as cholera, typhoid etc. 

Pollutants such as lead and cadmium are eaten by tiny animals. Later, these animals are consumed by fish and shellfish, and the food chain continues to be disrupted at all higher levels. Eventually, humans are affected by this process, too.

28.

What factor is responsible for transport of water in plants at night?

Answer»

The effect of root pressure plays a important role during the night to move water upwards in a plant. Root pressure develops in the root cells because of turgidity. Under this pressure, water passes from the living cells of a root into the xylem and rises up through the stem up to the leaves.

29.

Statement - as the festive season is round the corner, the country is on high alert due to rise in the level of pollution. So, government has given the orders to use green crackers in place of conventional crackers just few days before Diwali. These green crackers are environment friendly and cost effective fire-craker and produce 20-30% less pollution over conventional one. Which of the following is incorrect with respect to the given statement ? (I) Fire crackers release pollutant which in turn mixed with air and cause pollution. (II) In festive season the level of pollution gets increased. (III) The government is taking various steps to decline the level of pollution. (IV) the green fire crackers are quite expensive, so the shopkeepers will have to bear loss.A. I and IIB. II and IIIC. I and IVD. only IV

Answer» Correct Answer - D
Only IV, is incorrect as it is mentioned in above statement that green crackers are cost effective whereas the (IV) statement states that green fire crackers are quite expensive.
30.

Based on the results of these parameters several indices are derived, which give quantitative information about the red blood cells. These are called absolute values or Erythrocyte indices. What are these parameters?a) hemoglobin, PCV and total red cell count b) hemoglobin, ESR and total white cell count c) hemoglobin, PCV and total platelet count d) hemoglobin, ESR and total red cell count

Answer»

Correct option: a) hemoglobin, PCV and total red cell count

31.

Ravi is working in laboratory and when he is working with blood cells under microscope, he can see the blood cells That are small and colorless and moderately refractile, in unstained preparations. Identify the blood cell. a) RBC b) WBC c) Platelet d) Reticulocyte

Answer»

Correct option: c) Platelet

32.

The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

Answer»

Here, radius of curvature, R = 20 cm.
Focal length, f=?
We know, that, f =R/2  = 20/2 cm = 10 cm
The focal length of 
spherical mirror is 10 cm.

33.

Name a mirror that can give an erect and enlarged image of an object.

Answer»

Concave mirror can give an erect and enlarged image of an object, when object is placed between pole and focus of the mirror.

34.

Name the blood vessel that carry blood away from the heart to various organs of the body.

Answer»

The arteries carry oxygen and nutrients away from heart to various organs of the body. The veins take oxygen-poor blood back to the heart. Arteries begin with the aorta, the large artery leaving the heart.

35.

Maximum value of `f(x)=sinx+cosx ` is `:`A. 1B. 2C. `(1)/(sqrt(2))`D. `sqrt(2)`

Answer» Correct Answer - D
`y=f(x)=sinx+cosx`
`(dy)/(dx)=cosx-sinx`
`(dy)/(dx)=0,sinx=cosx,tanx=1`
`x=45^(@)`
`y=sin45^(@)+cos45^(@)`
`=(1)/(sqrt(2))+(1)/sqrt(2)`
`=(2)/(sqrt(2))=sqrt(2)`
Alter `:fx=sqrt(2)sin(x+(pi)/(4))`
`f(x)_(max)=sqrt(2)`
36.

If `y=4cos4x` find `int y dx`

Answer» Correct Answer - C::D
`y=4cos4x`
`intydx=int4cost(dt)/(4)`
`4x=t`
`4dx=dt`
`dx=(dt)/(4)`
`int4cost(dt)/(4)=sint=sin4x`
37.

If `x(x)=(x+1)/(x-1)`, then the value of `f(f(f(x)))` is :A. `(x-1)/(x+1)`B. 1C. `(x+1)/(x-1)`D. x

Answer» Correct Answer - C
`f(f(x))=(((x+1)/(x-1))+1)/(((x+1)/(x-1))-1)=x`
`f(f(f(x)))= (x+1)/(x-1)`.
38.

Value of `int_(0)^(pi//2) cos 3t` isA. `(2)/(3)`B. `-(1)/(3)`C. `- (2)/(3)`D. `(1)/(3)`

Answer» Correct Answer - B
`int_(0)^(pi//2) cos 3t dt=[(sin 3t)/(3)]_(0)^(pi//2)`
`= (1)/(3) [-1-0]=(-1)/(3)`.
39.

Evaluate the following:cos45/sec30 + 1/sec60\(\frac{cos45^{\circ}}{sec 30^{\circ}}+\frac1{sec 60^{\circ}}\)

Answer»

\(\frac{cos45^{\circ}}{sec 30^{\circ}}+\frac1{sec 60^{\circ}}\)

⇒ cos 45° cos 30° + cos60°

⇒ \(\frac1{\sqrt2}\times\frac{\sqrt3}2+\frac12\)

\(=\frac{\sqrt3+\sqrt2}{2\sqrt2}\)

40.

1. If \( \sqrt{ } 5 \sin \theta-\cos \theta=0 \) and \( 0^{\circ}<\theta<90^{\circ} \), find θ.2. Evaluate \( : \frac{\cos 45^{\circ}}{\sec 30^{\circ}}+\frac{1}{\sec 60^{\circ}} \).

Answer»

1. \(\sqrt 5 sin \theta - cos \theta = 0\) 

⇒ \(\frac{sin\theta}{cos\theta} = \frac1{\sqrt 5}\)

⇒ \(tan \theta = \frac1{\sqrt5}\)

⇒ \(\theta = tan^{-1}\left(\frac 1{\sqrt 5}\right), 0° < \theta < 90° \) 

\(\therefore \theta = 24 ° \) (approx)  (Using scientific calculator)

2. \(\frac{cos 45°}{sec 30°} + \frac 1{sec 60°}= \frac{\frac 1{\sqrt 2}}{\frac 2{\sqrt 3}} + \frac 12\)

\(= \frac{\sqrt 3}{2\sqrt 2} + \frac 12 = \frac {\sqrt 3 + \sqrt 2}{2\sqrt 2}\)

41.

If `y=x^(2)sin(x^(3))`, then `int ydx` will be :A. `-cos(x^(3))+C`B. `(-cos.(x^(3))/(3))+C`C. `cos(x^(3))+C`D. `((cos x^(3))/(3))+C`

Answer» Correct Answer - B
`y=x_(2) sin x_(3)`
`int x^(2) sin x^(3) dx` let `u=x_(3) rArr du = 3x_(2) dx`
`int(sin xdx)/(3)=(1)/(3)(-cosx)+C=-(1)/(3) cosx_(3) +C`.
42.

`sin(90^circ+theta)` isA. `sin theta`B. `cos theta`C. `- cos theta`D. `- sin theta`

Answer» Correct Answer - B
`sin(90^(@)+theta)=cos theta`.
43.

Evaluate : `int((1)/(ax + b)) dx.`A. `log_(e)(ax+b)+C`B. `a log_(e) (ax+b)+C`C. `C+(1)/(a) log_(e)(ax+b)`D. `(1)/(b)log_(e)(ax+b)+C`

Answer» Correct Answer - C
`int(dx)/(ax+b)=(1)/(a) log_(e)(ax+b)+C`.
44.

`int x^(3) dx` is equal to :A. `3x^(2)`B. `(x^(4))/(4) +C`C. `(x^(4))/(4)`D. `4 x^(3)`

Answer» Correct Answer - B
`int x^(3)dx =(x^(4))/(4)+C`.
45.

If `y = e^(x). cot x` then `(dy)/(dx)` will beA. `e^(x) cot x- cosec^(2) x`B. `e^(x) cosec^(2) x`C. `e^(x)[cot x- cosec^(3) x]`D. `e^(x) cot x`

Answer» Correct Answer - C
`y=e_(x),(d)/(dx)cotx`
`(dy)/(dx)=e_(x)(cot x)+cot x(d)/(dx)(e_(x))`
`=e_(x)(-cosec_(2)x)+ cot x e_(x)`
`= e_(x)[cor x- cosec_(2) x]`.
46.

Double differentiation of displacement w.r.t. time is..A. accelerationB. velocityC. forceD. none

Answer» Correct Answer - A
`(dx)/(dt)=vrArr(d^(2)x)/(dt^(2))=`acceleration
47.

If `y=(lnx)/(x)`"then"`(dy)/(dx)` will be:A. `(1-lnx)/(x)`B. `(1+lnx)/(x^(2))`C. `(1-lnx)/(x^(2))`D. `(lnx-1)/(x^(2))`

Answer» Correct Answer - C
`y=(lnx)/(x)`
`(dy)/(dx)=(x(d)/(dx)(lnx)-lnx(d)/(dx)(x))/(x^(2))`
`=(x(1//x)-lnx)/(x^(2))`
`(dy)/(dx)=(1-lnx)/(x^(2))`
48.

Which of the following is incorrect ?A. `3O_(2)underset("Discharge")overset("Silent Electric")iff 2O_(3) , DeltaH =-284.5 k.J`.B. Ozone undergoes addition reaction with unsaturated carbon compound.C. Ozone oxidises moist iodine to iodic acid.D. Ozone oxidises lead sulphide to lead sulphate.

Answer» Correct Answer - C
`P_("total")("theo")=(1)/(4)xx100+(3)/(4)xx400=325"torr"`
`P_("exp")gtP_("theo")` it is positive deviation.
49.

If `y=x lnx` "then" `(dy)/(dx)` will be:A. `lnx+x`B. `1+ln x`C. `lnx`D. `1`

Answer» Correct Answer - B
`y=xlnx`
`(dy)/(dx)=x(d)/(dx)l nx+lnx(d)/(dx)(x)`
`=x((1)/(x))+lnx`
`=1+lnx`
50.

A mixture of 0.1 mol of `Na_(2)O` and 0.2 mol NaCl is dissolved in 1000g of `H_(2)O`. The boiling point of solution is `[Kb(H_(2)O)=0.52 K.kg"mol"^(-1)]`A. `101.364`B. `100.364`C. `102.463`D. `100.463`

Answer» Correct Answer - C
`ClF_(3)+H_(2)OrarrHClO_(2)+HF`
Oxidizing character of aqueous solution of `ClF_(3)` is due to presence of `HClO_(2)`