Which of the following gases is absorbed from the air during photosynthesis?

5 years ago

A. Carbon (II) oxide B. Carbon (IV) oxide C. Nitrogen D. Noble gases E. Oxygen Correct Answer: Option B -…

When dust particles collide randomly in a beam of Sunlight, the phenomenon observed is known as?

5 years ago

A. Brownian movement. B. Dialysis C. Diffusion D. Osmosis E. Tyndall effect Correct Answer: Option E - Tyndall effect Explanation…

The most efficient absorber of ultraviolet radiation in the atmosphere is?

5 years ago

A. CO2 B. H2 C. H2O D. O2 E. O3   Correct Answer: Option E - O3

Chlorine atom forms Cl‾ by?

5 years ago

A. donating lone pair of electrons B. gaining an electron C. losing an electron D. sharing an electron E. sharing…

The type of reaction ethyne mainly undergoes is?

5 years ago

A. addition B. carboxylation. C. esterification D. saponification E. substitution Correct Answer: Option A - addition

All the following belong to the same family EXCEPT?

5 years ago

A. glycerol B. nylon C. perspex polyethene D. polyethene E. polystyrene Correct Answer: Option A - glycerol

Ptotal = P1 + P2 + P3 +…………. Pn. Is an expression of law?

5 years ago

A. Boyle’s B. Charles’ C. Dalton’s D. Graham’s E. Gay Lussac’s Correct Answer: Option C - Dalton’s

The following are ores of metals EXCEPT?

5 years ago

A. bauxite B. dolomite C. graphite D. haematite E. magnetite Correct Answer: Option C - graphite

The green house effect is a climatic condition associated with the presence of excess?

5 years ago

A. carbon (II) oxide B. carbon (IV) oxide C. hydrogen sulphide D. nitrogen (II) oxide E. oxygen Correct Answer: Option…