Chemistry Practice Question and Answer

Q:

Neutron was discovered -

1016 0

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

Q:

The coil in a heater is made of

1011 1

  • 1
    Nichrome
    Correct
    Wrong
  • 2
    Tungsten
    Correct
    Wrong
  • 3
    Copper
    Correct
    Wrong
  • 4
    Iron
    Correct
    Wrong
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Answer : 1. "Nichrome"

Q:

What do you call the drugs that bind to the receptor site and inhibit its natural function?

1009 0

  • 1
    Antidepressants
    Correct
    Wrong
  • 2
    Agonist
    Correct
    Wrong
  • 3
    Antagonists
    Correct
    Wrong
  • 4
    Depressants
    Correct
    Wrong
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Answer : 3. "Antagonists"
Explanation :

1. Name: Antagonist

2. Mechanism of action: By binding to the surface of the receptor, they cause opposition to the natural function.

Q:

______fibre is used in making bullet proof vests.

1008 0

  • 1
    Nylon-66
    Correct
    Wrong
  • 2
    Terylene
    Correct
    Wrong
  • 3
    Kevlar
    Correct
    Wrong
  • 4
    Lexan
    Correct
    Wrong
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Answer : 3. "Kevlar"

Q:

Emulsion is a dispersion of ____.

1004 0

  • 1
    Gas in Gas
    Correct
    Wrong
  • 2
    Solid in Solid
    Correct
    Wrong
  • 3
    Liquid in Liquid
    Correct
    Wrong
  • 4
    All of these
    Correct
    Wrong
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Answer : 3. "Liquid in Liquid "

Q:

Substances that have a sour taste and which makes a solution of blue litmus red are called?

991 0

  • 1
    acid
    Correct
    Wrong
  • 2
    salts
    Correct
    Wrong
  • 3
    consumed
    Correct
    Wrong
  • 4
    Base
    Correct
    Wrong
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Answer : 1. "acid"

Q:

Find the temperature at which the below reaction will be in equilibrium if the enthalpy and entropy change for the reaction is 30 Kj mol-1 and 105 J K-1 mol-1 respectively
Br2(l) + Cl2(g) → 2BrCl(g)

986 0

  • 1
    273 K
    Correct
    Wrong
  • 2
    300 K
    Correct
    Wrong
  • 3
    450 K
    Correct
    Wrong
  • 4
    285.7 K
    Correct
    Wrong
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Answer : 4. "285.7 K"

Q:

Melting and boiling points of ionic compounds -

984 0

  • 1
    contains the following
    Correct
    Wrong
  • 2
    are high
    Correct
    Wrong
  • 3
    are normal
    Correct
    Wrong
  • 4
    All the statements are true
    Correct
    Wrong
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Answer : 2. "are high"

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