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 Chemistry Questions

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Q:

Which amongst the following is not a Cation?

A) Aluminium ion B) Copper ion
C) Sulphate ion D) Zinc ion
 
Answer & Explanation Answer: C) Sulphate ion

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Q:

Which molecule is used up in photosynthesis?

A) Water B) Carbohydrates
C) Oxgen D) Sugar
 
Answer & Explanation Answer: A) Water

Explanation:

The first step in photosynthesis is to split the water molecule using sun light.

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Q:

Which among the following compounds has the strongest hydrogen bond?

A) HI B) HCl
C) HF D) HBr
 
Answer & Explanation Answer: C) HF

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Q:

Plastic bottles are made of a polymer called PET. The expanded form of PET is

A) Polyethylene terephthalate B) Polyethyl terelene
C) Polyethylene triphosphate D) Polyethyl tetrachloride
 
Answer & Explanation Answer: A) Polyethylene terephthalate

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Q:

Which one of the following statements regarding histone proteins is correct?

A) Histones are proteins that are present in mitochondrial membrane B) Histones are proteins that are present in nucleus in association with DNA
C) Histones are proteins associated with lipids in the cytosol D) Histones are proteins associated with carbohydrates in the cytosol
 
Answer & Explanation Answer: B) Histones are proteins that are present in nucleus in association with DNA

Explanation:

Histones are highly alkaline proteins found in eukaryotic cell nucleusthat package and order the DNA into structural units called nucleosomes. They are the chief protein components of chromatin, acting as spools around which DNA winds, and playrole in gene regulation.

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Q:

Which of the following acts as best adsorbent?

A) Charcoal B) Activated Charcoal
C) Activated Coconut Charcoal D) Carbon black
 
Answer & Explanation Answer: C) Activated Coconut Charcoal

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Q:

What is the chemical formula for Sodium Chloride (Salt)?

A) NaCl2 B) NaCl
C) Na2Cl D) Na2C
 
Answer & Explanation Answer: B) NaCl

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Q:

The Chemical formula of Methanol is _____.

A) C2H5OH B) CH3(OH)2
C) CH3OH D) CH4OH
 
Answer & Explanation Answer: C) CH3OH

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