Natural Radioactivity was discovered by Becquerel in ____________...? Mcqs

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Natural Radioactivity was discovered by Becquerel in ____________...?

(A) 1766
(B) 1896

(C) 1935
(D) 2001

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Which of the following is the most toxic gas...?

(A) Carbon dioxide
(B) Carbon monoxide

(C) Nitrogen
(D) Hydrogen

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German Silver is an alloy of___________...?

(A) Zn + Ni
(B) Cu + Zn

(C) Cu + Ni
(D) Cu + Sn

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The particles of a liquid...?

(A) Are tightly packed and stay in a fixed position
(B) Are free to move in a container but remain in close contact with one another

(C) Are widely spaced and move freely in any direction
(D) Are sparse and vibrate at long distances

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In humans , most nutrient molecules are absorbed by the ...?

(A) Small intestine
(B) Stomach

(C) Liver
(D) Large intestine

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Addition reaction is also known as ____...?

(A) Combination Reaction
(B) Synthesis Reaction

(C) Decomposition Reaction
(D) Both A and B

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What percentage of earth’s water supply is fresh water___________...?

(A) 3%
(B) 5%

(C) 21%
(D) None of these

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How many rows and columns are in the modern Periodic Table...?

(A) 18 columns and 7 rows
(B) 12 columns and 9 rows

(C) 7 columns and 18 rows
(D) 25 columns and 15 rows

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The approximate intensity level of the sound which can cause damage to the ear drum is...?

(A) 20 dB
(B) 60 dB

(C) 100 dB
(D) 160 dB

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The vitamin which is generally excreted by humans in urine is__________...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin B12
(D) Vitamin C

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