1099+ Important Chemistry MCQ Questions Answers

Q:

Which among the following difference between aerobic and anaerobic respiration is INCORRECT?

A) Aerobic respiration takes place in presence of oxygen – Anaerobic respiration takes place in the absence of oxygen	B) In Aerobic respiration pyruvate is broken down into ethanol and carbon dioxide – In Anaerobic respiration pyruvate is broken down into carbon dioxide and water
C) In Aerobic respiration more energy is released – In Anaerobic respiration less energy is released	D) Aerobic respiration takes place in mitochondria– Anaerobic respiration takes place in yeast

Answer & Explanation Answer: B) In Aerobic respiration pyruvate is broken down into ethanol and carbon dioxide – In Anaerobic respiration pyruvate is broken down into carbon dioxide and water

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Q:

Which of the following is not a nitrogenous fertiliser?

A) Ammonium sulphate	B) Urea
C) Ammonium nitrate	D) Superphospohate

Answer & Explanation Answer: D) Superphospohate

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Q:

Which of these is not a macronutrient for Plants?

A) Nitrogen	B) Phosphorus
C) Potassium	D) Chlorine

Answer & Explanation Answer: D) Chlorine

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Q:

Atomic number of which of the following elements is greater than that of Neon?

A) Oxygen	B) Magnesium
C) Nitrogen	D) Boron

Answer & Explanation Answer: B) Magnesium

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Q:

Which among the following is called quicksilver?

A) Titanium	B) Mercury
C) Platinum	D) Radium

Answer & Explanation Answer: B) Mercury

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Q:

___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

A) Sublimation	B) Evaporation
C) Condensation	D) Liquidation

Answer & Explanation Answer: A) Sublimation

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Q:

Beryl is an ore/mineral of

A) Nickel	B) Beryllium
C) Lead	D) Tin

Answer & Explanation Answer: B) Beryllium

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Q:

......... is a deliquescent compound.

A) Quick lime	B) Sulphuric acid
C) Phosphorous pentoxide	D) Magnesium chloride

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