Chemistry Practice Question and Answer

Q:

Which of the following metals is available in wire form?

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  • 1
    Calcium
    Correct
    Wrong
  • 2
    Magnesium
    Correct
    Wrong
  • 3
    Copper
    Correct
    Wrong
  • 4
    Lead
    Correct
    Wrong
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Answer : 3. "Copper"

Q:

Read the following questions carefully and answer them. 

The isotope of Uranium used in atomic reactors is

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  • 1
    $$U^235$$
    Correct
    Wrong
  • 2
    $$U^236$$
    Correct
    Wrong
  • 3
    $$U^237$$
    Correct
    Wrong
  • 4
    $$U^232$$
    Correct
    Wrong
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Answer : 1. "$$U^235$$ "

Q:

Identify a class of compounds that has a functional group –OH.

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  • 1
    Alcohol
    Correct
    Wrong
  • 2
    Ethane
    Correct
    Wrong
  • 3
    Ketone
    Correct
    Wrong
  • 4
    Aldehyde
    Correct
    Wrong
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Answer : 1. "Alcohol"
Explanation :

1. That class of compounds, which contain a functional group –OH, is called alcohol.

2. Alcohols contain a hydrogen atom and a hydroxyl group (-OH) along with a carbon atom.

3. The hydroxyl group is a polar group, which makes the alcohol soluble in water.

Q:

.______ is least reactive element belonging to group 17.

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  • 1
    Bromine
    Correct
    Wrong
  • 2
    Iodine
    Correct
    Wrong
  • 3
    Chlorine
    Correct
    Wrong
  • 4
    Fluorine
    Correct
    Wrong
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Answer : 2. "Iodine "

Q:

Find the compound which undergoes nucleophilic substitution reaction exclusively by an SN1 mechanism

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  • 1
    Benzyl chloride
    Correct
    Wrong
  • 2
    Chlorobenzene
    Correct
    Wrong
  • 3
    Ethyl chloride
    Correct
    Wrong
  • 4
    Isopropyl chloride
    Correct
    Wrong
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Answer : 1. "Benzyl chloride "

Q:

Halogens are belonging to:

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  • 1
    Group17
    Correct
    Wrong
  • 2
    Group 8
    Correct
    Wrong
  • 3
    Group 18
    Correct
    Wrong
  • 4
    Group 7
    Correct
    Wrong
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Answer : 1. "Group17 "

Q:

What is the more common name for solid carbon dioxide?

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  • 1
    Quick Silver
    Correct
    Wrong
  • 2
    Epsom
    Correct
    Wrong
  • 3
    Potash
    Correct
    Wrong
  • 4
    Dry Ice
    Correct
    Wrong
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Answer : 4. "Dry Ice"

Q:

Which one of the following is non-reducing sugar?

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  • 1
    Glucose
    Correct
    Wrong
  • 2
    Sucrose
    Correct
    Wrong
  • 3
    Maltose
    Correct
    Wrong
  • 4
    Lactose
    Correct
    Wrong
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Answer : 2. "Sucrose"

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