A man is standing on a weighing machine in a lift which is moving. The weighing machine will slow MINIMUM reading when, the lift is moving...? Mcqs

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A man is standing on a weighing machine in a lift which is moving. The weighing machine will slow MINIMUM reading when, the lift is moving...?

(A) Upward with uniform speed
(B) Downward with uniform acceleration

(C) In a free fall due to failure of the lift mechanism
(D) None of these

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Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere...?

(A) Carbon dioxide
(B) Chlorofluorocarbons

(C) Nitrogen oxides
(D) Methane

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Percentage of oxygen in human body is _____...?

(A) 65%
(B) 70%

(C) 10%
(D) 18%

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A (an) ________ is the smallest possible particle of an element that can combine to form new compounds....?

(A) Molecule
(B) Atom

(C) Compound
(D) Element

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Which best describes the frog...?

(A) Consumer
(B) Producer

(C) Decomposer
(D) None

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If output voltage is greater than input voltage, then transformer is :...?

(A) Step up
(B) Step down

(C) Faulty
(D) None of These

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For seeing objects at the surface of water from a submarine under water, the instrument used is ________...?

(A) Periscope
(B) Telescope

(C) Kaleidoscope
(D) Spectroscope

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The Earth behaves like a magnet with ______ poles...?

(A) Four
(B) Three

(C) Two
(D) None of these

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The electricity from a cell is called...?

(A) Direct Current (DC)
(B) Alternating Current (AC)

(C) Electric Potential (EP)
(D) Electric Resistance (ER)

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What is total area of the earth...?

(A) 510.94 million km²
(B) 492.102 million km²

(C) 392.023 million km²
(D) 692.192 million km²

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