Which of the following fertilizers is not useful for paddy rice ?
(A) urea
(B) DAP
(C) Ammonium sulphate
(D) Ammonium nitrate
Which of the following is the most suitable catalyst for ammonia synthesis ?
(A) Pt
(B) ZnO + Cr2O3
(C) Fe in fused mixture of Al2O3 + SiQ2 + MgO
(D) All of the above
Which of the following is incorrect statement about nitrogen importance ?
(A) It enhances plant growth
(B) It is involved in the synthesis of protein and nucleic acids
(C) it accelerates fruits and flowers growth
(D) It is involved in the chlorophyll synthesis
For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants__________________?
(A) Single
(B) Square
(C) Cube
(D) Raise to power four
Rate of disappearance of reactant is equal to_________________?
(A) Rate of reaction
(B) Rate of formation of product
(C) Energy released during reaction
(D) A and B
Unit of rate of reaction is_________________?
(A) Moles dm-3 sec-1
(B) Moles dm-3
(C) Moles sec-1
(D) Mol-1 dm3 sec-1
The value of activation energy is primarily determined by_______________?
(A) Temperature
(B) Effective collision
(C) Concentration of reactants
(D) Chemical nature of reactants and products
The specific rate constant of a first order reaction depends on the________________?
(A) Time
(B) Concentration of the reactant
(C) Temperature
(D) Concentration of the product