The light rays used for eliminating bacteria...? Mcqs

Latest MCQs

The light rays used for eliminating bacteria...?

(A) X-rays
(B) infrared rays

(C) microwave radiation
(D) ultra-violet radiation

Latest MCQs

How many proton is present in the nucleus of Protium isotope...?

(A) 3
(B) 2

(C) 1
(D) 0

Latest MCQs

In which of the following, the speed of sound is minimum...?

(A) Brick
(B) Air

(C) Lead
(D) Copper

Latest MCQs

What is used in making of alloys...?

(A) Gypsum
(B) Granite

(C) Chromium
(D) Lime-stone

Latest MCQs

Which gas is produced when trees and fossil fuels are burnt...?

(A) Carbon monoxide
(B) Carbon dioxide

(C) Nitrogen oxide
(D) Oxygen

Latest MCQs

The difference in the duration of day and night increases as one moves from:_________...?

(A) West to East
(B) East and west of the prime meridian

(C) Equator to poles
(D) None of these

Latest MCQs

Which is a secondary consumer that eats birds/mouse (primary consumers)...?

(A) Cat
(B) Goat

(C) Peacock
(D) None

Latest MCQs

The amount of solid waste or concentration of gases other than oxygen increase in atmosphere is called...?

(A) Air pollution
(B) Ozone depletion

(C) Acid rain
(D) Greenhouse effect

Latest MCQs

What happens when you run a plastic comb through your dry and non-oily hair and then hold the comb above bits of paper...?

(A) Bits of paper get instantly attracted to the comb
(B) Bits of paper remain unaffected

(C) Bits of paper start to repel the comb
(D) Bits of paper start to stick to your hair

Latest MCQs

What do friction forces between the air and a moving object cause...?

(A) Speed increase
(B) Weight decrease

(C) Resistance
(D) Energy gain

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