RRB GROUP D Chemistry Quiz

Question 1:

Which of the following isotope is used for studying photosynthesis in plants ?

O¹⁸

O¹⁶

O¹⁷

O¹⁹

Question 2:

Which of the following are exothermic processes?

Reaction of water with quick lime
Sublimation of naphthalene
Evaporation of water
Dilution of an acid

1,2

1,3

1,4

2,3

Question 3:

Element in the same group is similar in-

Chemical properties

Atomic mass

Atomic number

None of these

Question 4:

What happen when sewage is disposed in water bodies ?

DO increases

BOD increases

DO remain same

BOD remain same

Question 5:

Magnetic quantum number determines

Shape of orbitals

Spatial orientation of orbitals

Total energy of orbitals

Spin of an electron

Question 6:

In the process of Goldschmidt’s Alumino-thermite reduction method , which of the following acts as a reducing agent?

Iron

Aluminium

Iron oxide

Chromium oxide

Question 7:

Which of the following metals will melt if you keep it on your palm?

Gallium

Caesium

Both 1 and 2

Only 2

Question 8:

Manganese is extracted by heating manganese dioxide with Al powder . Which one of the following statements with regards to the reaction is correct ?

The reaction is exothermic

The reaction is endothermic

Mn is produced as a solid

Mn is more reactive than Al

Question 9:

What is the maximum number of electrons in the M shell ?

6

8

18

32

Question 10:

Which of the following is producer gas ?

CO + H₂

N₂ + H₂

CO + H₂O

CO + N₂

RRB GROUP D Chemistry Quiz - 11

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RRB GROUP D Chemistry Quiz - 11

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