Which of the following metals is not only magnetic but also radioactive...? Mcqs

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Which of the following metals is not only magnetic but also radioactive...?

(A) Thorium
(B) Aluminum

(C) Iron
(D) None of these

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Which of the following gases is most predominant in the Sun...?

(A) Helium
(B) Hydrogen

(C) Nitrogen
(D) Ozone

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Soap and detergents remove the dirt from clothes due to...?

(A) Capillary action
(B) Osmosis

(C) Diffusion
(D) Lowering of interfacial tension

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The pH of milk is...?

(A) 6
(B) 6 point 7

(C) 7
(D) 7 point 5

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Plants exhale at night time which gas...?

(A) O2
(B) H20

(C) Co1
(D) CO2

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James Chadwick is known for his discovery...?

(A) Proton
(B) Neutron

(C) Electron
(D) None of these

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The freezing point of water on a centigrade scale is...?

(A) 0°C
(B) 1°C

(C) -1°C
(D) 5°C

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Which of the following is the least polluted gas...?

(A) Carbon
(B) Nitrogen

(C) Chlorine
(D) None of these

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Hypothermia is caused by exposure to...?

(A) Extreme Cold
(B) Extreme Heat

(C) Excessive radiation
(D) None of these

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Which of the following is not a chemical reaction...?

(A) Burning of a paper
(B) Conversion of Water into stream

(C) Digestion of food
(D) Burning of coal

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