Question # 1

Urea is nitrogenous fertilizer. It consist of nitrogen.

Choose an answer

26.6 %

36.6%

46.6%

56.6%

Process of heating the concentrated ore to high temperature in excess of air is called.

Choose an answer

Roasting

Smelting

Bessemerization

All

What is the percentage of carbon in anthracite?

Choose an answer

60%

70%

80%

90%

Permanent hardness is removed by adding.

Choose an answer

Na₂ zeolite.

Soda lime

Lime water

Quick lime

Identify which one of the following compounds is a ketron?

Choose an answer

(CH₃)₂ CHOH

(CH₃)₂CHCl

(CH₃)₂CO

(CH₃)₂CHCl

General formula of alkynes is:

Choose an answer

C_nH_n

C_nH_2n

C_nH_2n+2

C_nH_2n-2

The process by which water rises up from the roots of plants to leaves is called.

Choose an answer

Photosynthesis

Respiration

Surface tension

Capillary action

Which one of the following is testeless?

Choose an answer

Sucrose

Glucose

Fructose

Starch

Boiling point of water is:

Choose an answer

0^oC

25^oC

80^oC

100^oC

Infrared radiations emitted by the Earth are absorbed by.

Choose an answer

CO₂ and H₂O

N₂ and O₂

CO₂and N₂

O₂and CO₂

DNA was discovered by

Choose an answer

J .Watson

Funk

Robert brown

Hopkins

Which gas saves the surface of earth from ultra violet radiation?

Choose an answer

CO₂

CO

N₂

O₃

Alkyl radical is derivative of

Choose an answer

Alkane

Alkene

Alkyne

All

More Classes

Other Links

10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer