Cement is a mixture of________________?

A. Clay and clinker
B. Clay lime stone and gypsum
C. Lime stone and gypsum
D. Lime stone and clay

Rate of enzymatic reaction is directly proportional to the concentration of___________________?

A. Enzyme
B. Substrate
C. Enzyme and substrate
D. Enzyme and product

Purines and pyrimidines are__________________?

A. Enzymes
B. Nitrogenous bases
C. Carbohydrates
D. Lipids

Nucleic acids direct the synthesis of__________________?

A. Glucose
B. Triglycerides
C. Proteins
D. All

The fertility of the soil is improved by________________?

A. Rotation of the crops
B. Adding lime to the acid salts
C. Adding manure and growing legumes
D. All

The fertilizers which provide single nutrient from NPK are called ___________ fertilizer?

A. Straight
B. Compound
C. Both a and b
D. None of the above

Addition of urea to the soil is ____________ reaction?

A. Endothermic
B. Exothermic
C. Both a and b
D. No heat energy is involved

The cooling of molten urea by air in the tower is called______________________?

A. Prilling
B. Evaporation
C. Condensation
D. Crystallization

Enzynies that catalyze the transfer of groups within molecule are called_________________?

A. Isomerases
B. Lyases
C. Transferases
D. Ligases

Amylose is__________________?

A. Soluble in water
B. Insoluble in water
C. Soluble in alcohol
D. Partially soluble in alcohol