Basic Science Questions and Answers

Basic Questions and Answers
Q :  

What product is formed when sodium bicarbonate is heated excessively?

(A) sodium carbonate

(B) sodium hydroxide

(C) sodium peroxide

(D) sodium monoxide


Correct Answer : A

Q :  

Stars shine, but they do not shine because-

(A) They emit light of constant intensity

(B) Their distance from the earth does not change with time

(C) They are far away from the earth and as a result the intensity of light decreases

(D) They are closer to the earth, so they get more light and are not visible even if there are small changes in intensity


Correct Answer : D

Q :  

Which one of the following options is not correct regarding X-ray?

(A) It has low penetrating power

(B) It moves at the speed of light

(C) it can be both reflected or refracted

(D) can affect the plate of photography


Correct Answer : A

Q :  

Which of the following weeds can control water pollution caused by industrial effluents?

(A) Parthenium

(B) Elephant grass

(C) Water Aquarius

(D) Mogar grass


Correct Answer : C

Q :  

What are the means of Waste (sledge) water?

(A) Waste water from kitchen is

(B) Waste water coming out of toilet is

(C) Waste water from factories is

(D) Waste water from hospitals is


Correct Answer : A

Q :  

Which of the following is the purest form of carbon?

(A) Anthracite

(B) Kajal

(C) Gaphite

(D) Charcoal


Correct Answer : A

Q :  

Which of the following gives hardness to stainless steel?

(A) Zinc

(B) Lead

(C) Carbon

(D) Tin


Correct Answer : C

Q :  

Which of the following carries food and other elements in plants?

(A) Xylem

(B) Phloem

(C) Chloroplast

(D) None of these


Correct Answer : B

Q :  

On what principle does the washing machine work?

(A) Dialysis

(B) Diffusion

(C) Reverse Osmosis

(D) Centrifugation


Correct Answer : D

Q :  

What is Cellulose?

(A) Monosaccharide

(B) Di-saccharide

(C) Polysaccharide

(D) none of these


Correct Answer : C

  

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    Rajesh Bhatia

    A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.

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