RRB GROUP D Chemistry Quiz - 10

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Question 1:

Which of the following observation helps us to determine whether a chemical reaction has taken place ?

  1. Formation of precipitate 
  2. Colour change
  3. Evolution of gas
  4. Release of gas

Question 2:

Which separation technique will you apply to separate the mixture of kerosene oil and water ?

1) Separating Funnel

2) Distillation

Question 3:

Which of the following is known as dead burnt plaster?

Question 4:

Which of the following is the example of triatomic molecule of an element ?

  1. Ozone
  2. Phosphorous
  3. Sulphur
  4. Helium
  5. Xenon

Question 5:

Which of the following is known as rock salt ?

1) Common salt

2) Baking Soda 

Question 6:

Which one among the following reacts with both HCl and NaOH?

Question 7:

Which of the following is used in orthopaedic devices ?

Question 8:

What designation is given to the orbital having n = 5 and l = 4 ?

Question 9:

Bleeding is stopped by the application of ferric chloride .This is because

Question 10:

Which of the following is the example of solid-liquid colloidal solution

  1. Mud
  2. Froth
  3. Milk of magnesia 
  4. Clouds
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