Basic Chemistry Quiz Questions for Class 10

The molecular formula of a compound in (CO)x and its vapour density is 70. Then the possible value of x is

If an acid having the construction as 0.01 N is diluted to 1000 times then the PH of that acid is?

Covalent linkages is formed by

Molecular weight of a substance is equivalent to

Which of the following is a neutral oxide

Number of groups present in the long form of the periodic table are

Deacon’s process is used for the manufacturing of

In which of the following preparation Hydrogen is not used?

When a burning splinter is brought near the gas jar containing hydrogen gas a poping sound is observed. It is due to

Atom that can neither gain nor lose electrons is said to be

Oxygen has two isotopes O¹⁶  & O¹⁸. If the percentage of O¹⁶  is 90 then the atomic weight of oxygen will be

Which one of the following is known as “King of Chemicals?”

Which of the following is used as a moderator in a nuclear reactor?

Skin becomes yellow in Conc. H₂SO₄ as

When chlorine gas is passed through NaoH, it forms

Which one of the following methods is considered to be the best method for the removal of temporary hardness of water?

The I.U.P.A.C. name of the compound CH₂ CH₂ CH (CH₃)₂ is

To  protect  the  metal  from  corrosion  it  is sometimes coated  with  a  thin  layer  of  Al₂O₃ (Aluminium oxide) and the process is called

Alloy is a homogenous mixture of

Alum is added with muddy water to

The common gas used in our refrigerator

The glasses which is used for making lenses and prisms for optical instrument

In the soda fire extinguishers due to

Fuel in Automobiles is a mixture of