All accurately known digits and first doubtful digit in an expression are known as...? Mcqs

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All accurately known digits and first doubtful digit in an expression are known as...?

(A) Non-significant figures
(B) Significant figures

(C) Estimated figures
(D) Crossed figures

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How much percentage of water on the earth is saltwater...?

(A) 90%
(B) 95%

(C) 98.5%
(D) 97.5%

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Which of the following scientific instruments is used to measure the atmospheric pressure...?

(A) Odometer
(B) Barometer

(C) Seismograph
(D) Audiometer

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Which from the following is NOT a conductor...?

(A) Aluminium
(B) Gold

(C) Graphite
(D) All are conductors

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In a photocell light energy is converted into...?

(A) potential energy
(B) chemical energy

(C) heat energy
(D) electrical energy

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Science is derived from Latin word “scientia” which means_________...?

(A) Reasoning
(B) Logic

(C) Knowledge
(D) Life

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Comets revolves around...?

(A) The sun
(B) The Moon

(C) The Earth
(D) Venus

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The distance of longitude represents how many minutes difference in time...?

(A) 10 minutes
(B) 4 minutes

(C) 15 minutes
(D) 1 minute

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A force is a ________ or a _______ that causes movement....?

(A) Pull, Twist
(B) Push, Pull

(C) Push, Lift
(D) Twist, Turn

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Night vision is possible with the help of ___________...?

(A) Red light
(B) Violet light

(C) Infrared Rays
(D) Ultra violet Light

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