Chemistry Practice Question and Answer

Q:

What is Neela Thoth?

1642 0

  • 1
    Copper sulphate
    Correct
    Wrong
  • 2
    Calcium sulfate
    Correct
    Wrong
  • 3
    Iron sulfate
    Correct
    Wrong
  • 4
    sodium sulfate
    Correct
    Wrong
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Answer : 1. "Copper sulphate"

Q:

Gastric juice contains acids?

1635 0

  • 1
    Acetic acid
    Correct
    Wrong
  • 2
    Sulfuric acid
    Correct
    Wrong
  • 3
    Hydrochloric acid
    Correct
    Wrong
  • 4
    Nitric acid
    Correct
    Wrong
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Answer : 3. "Hydrochloric acid"

Q:

What is the pH value of salts made from strong acids and weak bases?

1633 0

  • 1
    more than 7
    Correct
    Wrong
  • 2
    less than 7
    Correct
    Wrong
  • 3
    Between 10 and 14
    Correct
    Wrong
  • 4
    less than 14
    Correct
    Wrong
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Answer : 2. "less than 7"

Q:

Which of the following elements is NOT a component of baking soda?

1626 1

  • 1
    Hydrogen
    Correct
    Wrong
  • 2
    Calcium
    Correct
    Wrong
  • 3
    Sodium
    Correct
    Wrong
  • 4
    Oxygen
    Correct
    Wrong
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Answer : 4. "Oxygen"
Explanation :

1. Which of the following calcium elements is not a component of baking soda?

2. The chemical formula of baking soda is NaHCO3, which is composed of four elements sodium, hydrogen, carbon and oxygen.

3. Baking soda is an alkaline substance used as a leavening agent in baking.

Q:

The anode in a dry cell consists of 

1626 0

  • 1
    Cadmium
    Correct
    Wrong
  • 2
    Graphite
    Correct
    Wrong
  • 3
    Copper
    Correct
    Wrong
  • 4
    Zinc
    Correct
    Wrong
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Answer : 4. "Zinc "

Q:

Which of the following metals does not react with cold or hot water?

1623 0

  • 1
    Na
    Correct
    Wrong
  • 2
    Ca
    Correct
    Wrong
  • 3
    Mg
    Correct
    Wrong
  • 4
    Fe
    Correct
    Wrong
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Answer : 4. "Fe"

Q:

In atom, neutron was discovered by – 

1619 0

  • 1
    Rutherford
    Correct
    Wrong
  • 2
    Newton
    Correct
    Wrong
  • 3
    J.J . Thomson
    Correct
    Wrong
  • 4
    Chadwick
    Correct
    Wrong
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Answer : 4. "Chadwick "

Q:

Electronic configuration of the outer shell of the element Gd with atomic number 64 is

1616 0

  • 1
    4f4 5df 6s1
    Correct
    Wrong
  • 2
    4f3 5df 6s2
    Correct
    Wrong
  • 3
    4f5 5d4 6s1
    Correct
    Wrong
  • 4
    4f7 5d1 6s2
    Correct
    Wrong
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Answer : 4. "4f7 5d1 6s2"

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