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.

Match the columns:Column 'A’Column ‘B’Column 'C'(1) Amplitude(a) T(i) Pitch of sound(2) Frequency(b) A(ii) Loudness of sound(3) Wavelength(c) υ(iii) Reciprocal of frequency(4) Time period(d) λ(iv) v/υ

Answer»

Correctly matched column:

Column 'A’Column ‘B’Column 'C'
(1) Amplitude(b) A(ii) Loudness of sound
(2) Frequency(c) υ(i) Pitch of sound
(3) Wavelength(d) λ(iv) v/υ
(4) Time period(a) T(iii) Reciprocal of frequency
2.

Match the columns:Column ‘A’Column 'B’Column 'C'(1) Transverse wave(a) Particles oscillateparallel to direction of propagation(i) Wave produced in a slinky(2) Longitudinal wave(b) Particles oscillateperpendicular to direction of propagation(ii) Frequency less than 20 Hz(3) Ultrasound(c) Echo formation is heard under particular conditions(iii) Wave produced in string(4) Infrasound(d) High frequency waves(iv) Frequency between 20 Hz to 20000 Hz(5) Audible frequency(e) Low frequency waves(v) Frequency greater than 20000 Hz

Answer»

Correctly Matched columns:

Column ‘A’Column 'B’Column 'C'
(1) Transverse wave(b) Particles oscillate
perpendicular to direction of propagation
(iii) Wave produced in string
(2) Longitudinal wave(a) Particles oscillate
parallel to direction of propagation
(i) Wave produced in a slinky
(3) Ultrasound(d) High frequency waves(v) Frequency greater than 20000 Hz
(4) Infrasound(e) Low frequency waves(ii) Frequency less than 20 Hz
(5) Audible frequency(c) Echo formation is heard under particular conditions(iv) Frequency between 20 Hz to 20000 Hz
3.

What is the main difference between the frequencies of the voice of a man and that of a woman?

Answer»
  • Voice of a woman is high pitch i.e shorter wavelength and higher frequency.
  • Voice of man is low pitch i.e larger wavelength and smaller frequency.
4.

How is the direction of the oscillation of the particles of the medium related to the direction of propagation if the sound wave?

Answer»
  • Sound travels as a longitudinal wave.
  • In a longitudinal wave, the particle of the medium oscillate parallel to the direction of propagation of the wave.
5.

(a) In the above activity, what will happen if you lift one of the tubes to some height?(b) Measure the angle of incidence 01 and the angle of reflection 02. Try to see if they are related in any way.

Answer»

(a) If one of the tubes is lifted, angle of incidence will not be equal to angle of reflection, hence, the sound will not be clearly audible.

(b) Angle of incidence is same as the angle of reflection.

6.

How will you reduce reverberation in public halls or buildings?

Answer»

(i) Reverberation in public halls or buildings will be reduced by using sound absorbing materials like curtains on wall, carpets on the floor. 

(ii) By keeping the windows open, as sound will not get reflected.

7.

The complementary angle for 72° isA) 108°B) 18°C) 28°D) 118°

Answer»

Correct option is B) 18°

8.

If p//q and ∠1 – 55° then ∠2 =A) 55°B) 35°C) 145°D) 110

Answer»

Correct option is A) 55°

9.

The tiny dots which forms on the screen (picture elements) are called as ………… (a) pitel (b) pixel (c) dots (d) dpi

Answer»

Correct Answer is: (b) pixel

10.

What is a solid?

Answer»

A solid is a state of matter which has a definite shape and size. When energy is given to a solid molecules of a solid can vibrate with small amplitudes about their mean position.

11.

What is a liquid?

Answer»

A liquid is a state of matter which has no definite shape but has a definite volume.

12.

What is the value of the modulus of rigidity of a liquid?

Answer»

The value is Zero

13.

How do pollen grains pollute the air?

Answer»

Pollen grains released by plants remain floating in the air and pollute it.

14.

What gas is released from decay of organic matter lying under water?

Answer»

Decay of organic matter lying under water releases Methane gas as air pollution.

15.

What gas is released from decay of organic matter?

Answer»

Decay of organic matter releases Ammonia gas into air.

16.

What pollutants are released by forest fires?

Answer»

Forest fires release carbon particles (ash) into the air and pollute the air.

17.

A three-wheeler scooter charges Rs 15 for first kilometer and Rs 8 each for every subsequent kilometer. For a distance of x km, an amount of Rs y is paid. Write the linear equation representing the above information.

Answer»

Let, total fare for covering the distance of ‘x’ km is given by Rs y 

As per the given statement; 

y = 15 + 8(x – 1) 

y = 15 + 8x – 8 

y = 8x + 7 

Above equation represents the linear equation for the given information.

18.

A three-wheeler scooter charges Rs 15 for first kilometer and Rs 8 each for every subsequent kilometer. For a distance of x km, an amount of Rs y is paid. Write the linear equation representing the above information.

Answer»

Total fare of Rs y for covering distance of x kilometers is given by

y = 15 + 8(x-1)

y = 15 + 8x - 8

y = 8x +7

This is the required linear equation for the given information 

19.

मालिकी के आधार पर संपत्ति के कितने प्रकार हैं ?

Answer»

मालिकी के आधार पर संपत्ति के दो प्रकार हैं :

  1. व्यक्तिगत संपत्ति
  2. सामाजिक संपत्ति ।
20.

भूमि को उसके प्रतिफल के रूप में इनमें से क्या मिलता है ?(A) किराया(B) वेतन(C) लाभ(D) ब्याज

Answer»

सही विकल्प है (A) किराया

21.

राष्ट्रीय संपत्ति किसे कहते हैं ?

Answer»

देश की मालिकी की संपत्ति को राष्ट्रीय संपत्ति कहते हैं । जैसे : नदी, पर्वत, रास्ते आदि ।

22.

किस संपत्ति को व्यक्तिगत संपत्ति कहते हैं ?

Answer»

जिस संपत्ति की मालिकी निजी हो और उसके उपयोग का आधार भी निजी निर्णय पर हो तो उसे व्यक्तिगत संपत्ति कहते हैं ।

23.

पूँजी का अर्थ बताइए ।

Answer»

जो भौतिक वस्तुएँ उत्पादन में सहायक हो उसे पूँजी कहते हैं । पूँजी मानवसर्जित साधन है, जो मनुष्य के कार्य को सरल बनाता है । जैसे : यंत्र

24.

पूँजी अर्थात् क्या ? लक्षण लिखिए ।

Answer»

पूँजी अर्थात् ऐसी भौतिक वस्तुएँ जो उत्पादन में सहायक हों ।
जैसे : यंत्र, रेलवे इंजन, हवाई जहाज, ट्रेक्टर आदि ।

पूँजी के लक्षण निम्नानुसार हैं :

  1. पूँजी उत्पादन का मानवसर्जित साधन है ।
  2. पूँजी सबसे अधिक गतिशील उत्पादन का साधन है ।
  3. पूँजी में कमी का तत्त्व होता है ।
  4. पूँजी के प्रतिफल को व्याज कहते हैं ।
25.

साधन का अर्थ बताइए ।

Answer»

तुष्टिगुण सर्जन की प्रक्रिया में जो सहायक हो तो उसे साधन कहते हैं ।

26.

सार्वजनिक वस्तुओं के दो लक्षण लिखिए ।

Answer»

सार्वजनिक वस्तुओं के लक्षण निम्नानुसार हैं :

  1. जिन वस्तु की मालिकी सरकार या सार्वजनिक संस्था की हो वह सार्वजनिक वस्तु है ।
  2. सार्वजनिक वस्तु का उपयोग सामूहिक स्तर पर होता है ।
  3. सार्वजनिक वस्तु बिन स्पर्धात्मक होती है ।
  4. सार्वजनिक वस्तु से कोई भी वंचित नहीं रहता है ।
  5. सार्वजनिक वस्तु का उपयोग विशाल क्षेत्र है ।
27.

श्रम का अर्थ बताकर उसके लक्षण बताइए ।

Answer»

“अन्य व्यक्ति के अंतर्गत (या सूचनानुसार) प्रतिफल की अपेक्षा के साथ होनेवाला मानसिक या शारीरिक कार्य करे तो उसे . श्रम कहते हैं और श्रम करनेवाले को श्रमिक कहते हैं ।”

श्रम के लक्षण निम्नानुसार हैं :

  1. श्रम और श्रमिक अविभाज्य हैं ।
  2. श्रम नाशवंत है ।
  3. श्रम का संग्रह नहीं हो सकता है ।
  4. सामाजिक-मानसिक कारण गतिशीलता को प्रभावित करते हैं ।
  5. प्रत्येक इकाई की कार्यक्षमता भिन्न भिन्न होती है ।
  6. श्रम पूर्ति आधार जनसंख्या पर है ।
  7. श्रम का चुकाये जानेवाले प्रतिफल को वेतन कहते हैं ।
28.

उत्पादन के साधन के संदर्भ में श्रम का अर्थ बताइए ।

Answer»

अन्य व्यक्ति के अंतरगत (या सूचना के अनुसार) प्रतिफल की अपेक्षा के साथ होनेवाला मानसिक या शारीरिक कार्य करें तो उसे श्रम कहते हैं तथा श्रम करनेवाले को श्रमिक कहते हैं ।

29.

उत्पादन का अर्थ समझाइए ।

Answer»

मनुष्य की आवश्यकताओं को संतुष्ट कर सकें इस प्रकार से वस्तु या सेवा को उपयोगी स्वरूप दिया जाये तो वह उत्पादन है । सरल शब्दों में कहें तो उपयोगिता का गुण सर्जन करना (तुष्टिगुण सर्जन) करने की प्रक्रिया अर्थात् उत्पादन । जैसे लकड़ी को कुरशी के रूप में बदलने से उसमें उपयोगिता का गुण बढ़ता है ।

30.

उत्पादन के मुख्य …………………………. साधन है ।

Answer»

सही उत्तर है : चार

31.

उत्पादन के साधन कितने और कौन-कौन से हैं ?

Answer»

उत्पादन के चार साधन हैं :

  1. भूमि
  2. पूँजी
  3. श्रम
  4. नियोजक ।
32.

The contestant of the assembly who belongs to no political partyA) Political party contestants B) Independents C) Long term contestants D) All the above

Answer»

(B) Independents

independents...................

33.

उत्पादन के साधनों का संयोजन करनेवाले को …………………..(A) व्यवस्थापक कहते हैं ।(B) नियोजक कहते हैं ।(C) श्रमिक कहते हैं ।(D) निवेशक कहते हैं ।

Answer»

सही विकल्प है (B) नियोजक कहते हैं ।

34.

What can be done to overcome these challenges in the family and the community?

Answer»

1. We should be create awareness about the importance of women in the community. 

2. Should provide education and employment opportunities to women. 

3. Men and women should be counselled regarding gender bias.

35.

A lending library has a fixed charge for the first three days and an additional charge for each day thereafter. Aarushi paid Rs 27 for a book kept for seven days. If fixed charges are Rs x and per day charges are Rs y. Write the linear equation representing the above information.

Answer»

Aarushi paid Rs 27, of which Rs. x for the first three days and Rs. y per day for 4 more days is given by 

x + (7 – 3) y = 27 

x + 4y = 27 

Above equation represents the linear equation for the given information.

36.

A lending library has fixed charge for the first three days and an additional charge for each day thereafter. Mona paid ₹27 for a book kept for 7 days, while Tanvy paid ₹21 for the book she kept for 5 days find the fixed charge and the charge for each extra day

Answer»

Let the fixed charge be Rs.x and the charge for each extra day be Rs.y. 

In case of Mona, as per the question 

x + 4y = 27 ………(i) 

In case of Tanvy, as per the question 

x + 2y = 21 ………(ii) 

Subtracting (ii) from (i), we get 

2y = 6 ⇒ y = 3 

Now, putting y = 3 in (ii), we have 

x + 2 × 3 = 21 

⇒ x = 21 – 6 = 15 

Hence, the fixed charge be Rs.15 and the charge for each extra day is Rs.3.

37.

Give the equations of two lines passing through (3, 12). How many more such lines are there, and why?

Answer»

Equation of line passing through a point (a, b) 

(x – a) = m(y – b) 

Where ‘m’ is an integer 

There are infinite lines passing through a point. 

Equation of two lines passing through (3, 12) 

Taking m = 1, 2 

⇒ x – 3 = y – 12 

⇒ x – y + 9 = 0 

And, 

(x – 3) = 2(y – 12) 

⇒ x - 3 = 2y – 24 

⇒ x – 2y + 21 = 0

38.

A lending library has a fixed charge for the first three days and an additional charge for each day thereafter. Aarushi paid Rs. 27 for a book kept for seven days. If fixed charges are Rs. x and per day charges are Rs. y. Write the linear equation representing the above information.

Answer»

Given, 

Lending library has a fixed charge for the first three days and an additional charge for each day thereafter. Aarushi paid Rs. 27 for a book kept for seven days. If fixed charges are Rs. x and per day charges are Rs. y. 

⇒ 3 × x + (7 – 3) × y = 27 

⇒ 3x + 4y = 27

39.

A three-wheeler scooter charges Rs. 15 for dirst kilometre and Rs. 8 each for every subsequent kilometre. For a distance of x km, an amount of Rs. y is paid. Write the linear equation representing the above information.

Answer»

Given, 

A three-wheeler scooter charges Rs. 15 for first kilometre and Rs. 8 each for every subsequent kilometre. 

For a distance of x km, an amount of Rs. y is paid.

⇒ 15 × 1 + (x – 1) × 8 = y 

⇒ 8x – y + 7 = 0

40.

An auto charges Rs. 15/- for first kilometre and Rs. 8/- for each subsequent kilometre. If Prameela travelled 7 km., how much amount she would have paid ? A) Rs. 105/- B) Rs. 56/- C) Rs. 71/- D) Rs. 63/-

Answer»

Correct option is (D) Rs. 63/-

Parmeela have to paid Rs 15 for first kilometer and Rs 8 for each left 6 kms.

(Because Parmeela travelled 7 km)

\(\therefore\) Total money she have to paid \(=Rs\,(15+6\times8)\)

= Rs (15+48) = Rs 63

Correct option is  D) Rs. 63/-

41.

Define (a) Callus (b) Embryoids

Answer»

(a) Callus is a mass of unorganized growth of plant cells or tissues in in vitro culture medium, 

(b) The callus cells undergoes differentiation and produces somatic embryos, known as Embryoids.

42.

The de Broglie wavelength of a 100-m sprinter of mass 66 kg running at a speed of 10 m/s is about [h = 6.63 × 10-34 J∙s] (A) 10-34 m (B) 10-33 m (C) 10-32 m (D) 10-31 m.v

Answer»

Correct option is (C) 10-32

43.

Mention the relation for de-Broglie wavelength. 

Answer»

According to de-Broglie theory, wavelength of matter wave associated with particle of momentum p (p = mv) is given by λ = h/p. 

44.

Consider the statements A and B in question 5. Thomson effect is caused (A) Free-electron density is different in different metals.(B) Free electron density in a metal depends on temperature.(a) due to both A and B (b) due to A but not due to B (c) due to B but not due to A (d) neither due to A nor due to B.

Answer» (c) due to B but not due to A
45.

Consider the statements A and B in the previous question. Peltier effect is caused (A) Free-electron density is different in different metals.(B) Free electron density in a metal depends on temperature.(a) due to both A and B (b) due to A but not due to B (c) due to B but not due to A (d) neither due to A nor due to B.

Answer» (b) due to A but not due to B
46.

Solidifying agent used in plant tissue culture is (a) Nicotinic acid (b) Cobaltous chloride(c) EDTA (d) Agar

Answer»

Correct Answer is: (d) Agar

47.

Write the various steps involved in cell suspension culture.

Answer»

Step 1: Growing of cells/callus in medium (Single or aggregates). 

Step 2 : Transfer of callus to a liquid medium. 

Step 3: Agitation of callus using rotary shaker. 

Step 4: Filtration and separation of cells.

48.

The time duration for sterilization process by using autoclave is ___________ minutes and the temperature is ___________(a) 10 to 30 minutes and 125° C (b) 15 to 30 minutes and 121° C (c) 15 to 20 minutes and 125° C (d) 10 to 20 minutes and 121° C

Answer»

(b) 15 to 30 minutes and 121° C

49.

Define tissue culture.

Answer»

Growing plant protoplasts, cells, tissues or organs away from their natural or normal environment, under artificial condition, is known as Tissue Culture.

50.

Define sterilization.

Answer»

Sterilization is the technique employed to get rid of microbes such as bacteria and fungi in the culture medium, vessels and explants.