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 Chemistry Questions

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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:

The force that a neutron exerts on a proton inside an atom is:

A) Tidal force B) Gravitational force
C) Electrostatic force D) Nuclear force
 
Answer & Explanation Answer: D) Nuclear force

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Q:

There are two elements-calcium (atomic number 20) and argon (atomic number 18). The mass number of both the elements is 40. They are therefore known as

A) isotones B) isochores
C) isobars D) isotopes
 
Answer & Explanation Answer: C) isobars

Explanation:

Isotopes-These  are  atoms  of  the elements  having  the  same  atomic number but different mass number.,  Isobars-These  are atoms of same mass number but different atomic  number.,  Isotones-These are  atoms  of  different  elements having same number of neutrons.

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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:

What are the main components of Brass Alloy?

A) Copper and Zinc B) Copper and Strontium
C) Copper, Zinc and Nickel D) Copper and Nickel
 
Answer & Explanation Answer: A) Copper and Zinc

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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:

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:

The Chemical formula of Aluminium Chloride is _____.

A) AlCl B) AlCl2
C) AlCl3 D) Al2Cl3
 
Answer & Explanation Answer: C) AlCl3

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