1351. PH of human blood is :
A. 6.4
B. 7.4 *
C. 7.1
D. 5.5
1352. Acidic buffer can resist change in PH when small amount of :
A. Strong acid is added
B. Strong base is added
C. Both *
D. None
1353. Solution of which salt has highest PH?
A. CH3COOK
B. NA2CO3 *
C. NH4Cl
D. NANO3
1354. NH4Cl solution is :
A. Neutral
B. Acidic *
C. Basic
D. Amphoteric
1355. PH of a centi-molar solution of a strong monobasic acid is :
A. 1
B. 2 *
C. 4
D. 3
1356. Solution of salt of strong acid and strong base is neutral because :
A. Only cation get hydrolyzed
B. Only onion get hydrolyzed
C. Both Ions are hydrolyzed
D. Neither cation nor anion get hydrolyzed *
1357. Chemical kinetics deal with :
A. Rate of reaction
B. Factor affecting reaction rate
C. Mechanism of reaction
D. All of the above *
1358. Unit of reaction rate is :
A. Mol.L-1, Sec-1 *
B. Mol.sec-1
C. Mol.sec
D. Sec.Mol-1
1359. Rate of rxn depends upon :
A. Concentration of reactants
B. Nature of reactants
C. Temperature
D. All of these *
1360. For a chemical rxn; A>B , the rate of rxn increase four times, when the concentration of reactant A is doubled ; the order of rxn is :
A. Zero
B. First
C. Second *
D. Half