chemistry quiz

solid converted directly into gas is called

• freezing

• sublimation

• evoporation

• melting

who described fermentation process

• louis pasteur

• john willington

• thomos alva edison

• williams maverick

The chemical change is...............

• water to clouds

• growth of tree

• cow dung to bio gas

• ice cream to molten ice cream

explain about periodic change and non- periodic change

Water freezes and melts at 0°C. Melting point is what kind of property?

• chemical

• colligative

• extensive

• physical

Protons are positively charged 

• True
• False

H2O + CO2   $\rightarrow$  H2CO3

The equation above is showing which chemical process?

(a)  

Which of the following statements are correct?

• Carbocation is the electrophillic species which can undergo 1,2-H and 1,2- R-group shift to attain stability.

• Kharasch effect is also known as Anti-Markovnikov's rule.

• Peroxides mostly generates free radicals as reactive intermediates.

• Carbocation is nucleophillic in nature and undergo 1,2-H and 1,2- R-group shift to attain stability.

Molecules with an atomicity of 1 are known as (a)   .

Proton was discovered by

• Ernest rutherford

• Niels Bohr