In 1869 Mandeleev put forward his periodic law about _____...? Mcqs

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In 1869 Mandeleev put forward his periodic law about _____...?

(A) Atomic Number
(B) Chemical properties

(C) Physical properties
(D) Atomic Mass

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Electric motor was invented by __________ ...?

(A) Michael Faraday
(B) Oliver Evans

(C) Thomas Edison
(D) Horace Day

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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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Communication satellites are used for _____...?

(A) Provide weather forecasting
(B) Mapping

(C) Telecommunication
(D) Space exploration

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The alloy of aluminium used for making magnet is_________...?

(A) Duralumin
(B) Y-Alloy

(C) Alnico
(D) Aluminium bronze

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A quantity that can be measured is called ____...?

(A) Physical Quantity
(B) Physical Constant

(C) Mathematical Quantity
(D) Standard Quantity

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Which of the following occurs when light passes through a substance unchanged...?

(A) Transmission
(B) Reflection

(C) Absorption
(D) Refraction

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Our atmosphere consists of__________ CO2...?

(A) 0.03 to 0.04% CO2
(B) 0.3 to 0.4% CO2

(C) 3 to 4% CO2
(D) None of these

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Vertebrates are divided into how many main groups based on temperature regulation...?

(A) 2
(B) 3

(C) 4
(D) 5

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Plant have ________ while animals lack it....?

(A) starch
(B) cellulose

(C) protein
(D) fat

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