Velocity of sound in air does not change with the change of...? Mcqs

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Velocity of sound in air does not change with the change of...?

(A) Temperature of air
(B) Pressure of air

(C) Moisture content in air
(D) Wind in the direction of propagation of sound

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The average heartbeat per minute in a normal man is _________...?

(A) 50
(B) 70

(C) 80
(D) 100

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The prefix ‘hept’ stands for the ____ carbon atoms....?

(A) 2
(B) 5

(C) 7
(D) 9

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Who invented the safety pin...?

(A) Charles Goodbye
(B) steward Harshone

(C) Walter Hunt
(D) A.Rose

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Substances that react with both acids and bases are called...?

(A) Conjugate acids
(B) Conjugate bases

(C) Amphoteric substances
(D) Buffers

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The male reproductive part of the flower is called...?

(A) Stamen
(B) Pistil

(C) Carpel
(D) Anther

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Coulombs law most closely resembles with ______...?

(A) Law of conservation of Energy
(B) Newton's Law of Gravitation

(C) Newton's 2nd law of Motion
(D) Faraday's law

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The absolute value of charge on electron was determined by ________ ...?

(A) J.J.Thomson
(B) Chadwick

(C) Rutherford
(D) Robert Millikan

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What is ‘Stealth Technology‘...?

(A) A device which when attached to an aircraft makes it invisible on the radar
(B) A coating which reduces the visibility of an aircraft on radar

(C) A Technology by which it is possible for the aircraft’s to spy in the enemy air-space
(D) A technology by using which paratroopers can be dropped stealthily behind the enemy columns.

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What is the Chemical formula of Zinc Hydroxide _________ ...?

(A) Zn(OH)2
(B) ZNO2

(C) Zn2(OH)3
(D) ZnOH

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