General Knowledge Questions

Q:

In spherical polar coordinates (l, q, a), q denotesthe polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by

A) Psinq sina B) Psinq cosa
C) Pcosq sina D) Pcosq cosa
 
Answer & Explanation Answer: A) Psinq sina

Explanation:

The Cartesian Coordinates can be retrieved from spherical coordinates (l,q,a) by:

X = r.sinq.cosa

Y = r.sinq.sina

Z = r.sinq

Using the same we get for P,

Y = P.sinq.sina

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Q:

In a bipolar junction transistor

A) all the three regions (the emitter, the base and the collector) have equal concentrations of impurity B) the emitter has the least concentration of impurity
C) the collector has the least concentration of impurity D) the base has the least concentration of impurity
 
Answer & Explanation Answer: D) the base has the least concentration of impurity

Explanation:

In terms of concentration of impurity (a.k.a impurity doping concentration, often abbreviated to doping concentration), from the highest to the lowest among the three regions of a bipolar junction, emitter, collector, and base are the correct order. The above order is independent of the type of BJT, npn or pnp

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Q:

In the given question, a part of the sentence is printed in bold. Below the sentence, three alternatives to the bold part are given which may help improve the sentence. Choose the option that reflects the correct use of the phrase in the context of the sentence. In case the given sentence is correct, your answer is (E) i.e. No correction required. Living in the heart of New York city is certainly like a far cry from living in the rural countryside. (i) heart of New York city is certainly a far cry from (ii) heart of New York city is a far cry than (iii) heart of the New York city is certainly ruing

A) Only (i)  B) Only (ii)
C) Only (iii) D) Both (ii) and (iii)
 
Answer & Explanation Answer: A) Only (i) 

Explanation:
The part of the sentence that is most important in this sentence is ‘a far cry.’ It means ‘vastly different from.’ But here this phrase has not been used in the correct way except option 1.
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Q:

Choose the correctly spelt word:-

A) Gragarious B) Gragerious
C) Gregarious D) Grigareous
 
Answer & Explanation Answer: C) Gregarious

Explanation:

Gregarious is spelt correctly which means sociable.

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Q:

Most stars are at what point in their life cycles?

A) Supernova B) Protostar
C) Red Giant D) Main Sequence
 
Answer & Explanation Answer: D) Main Sequence

Explanation:

most_stars_are_at_what_point_in_their_life_cycles1560330646.jpg image

Most stars are at main sequence point in their life cycles.

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Q:

Medical Sociology is the systematic study of

Answer

Medical Sociology is the systematic study of how humans manage their health problems, wellness and disorders and how they overcome sick to be healthy.

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Q:

In which of the following years Beti Bachao Beti Padhao (Save the daughter, educate the daughter) scheme was launched?

A) 2015 B) 2010
C) 2012 D) 2018
 
Answer & Explanation Answer: A) 2015

Explanation:
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Q:

The geologic time scale is subdivided into

A) Eon B) Era
C) Periods D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The geologic time scale is subdivided into 4 units called Eon, Era, Periods and Epochs.

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