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.Management Sciences
Category: Chemistry Mcqs
Which of the following can be used as anti-knocking agent ?
0
A. PbCl2
B. (C2H5)4 Pb
C. (C2H5)2 Pb
D. all of the above
Aqueous solution of borax above 62°C gives crystals of________________?
A. Na2B4O7.4H2O
B. Na2B4O7.5H2O
C. Na2B4O7.2H2O
D. Na2B4O7.10H2O
Negative log of mular concentration of H+ ions is called___________________?
A. pH
B. pOH
C. pKa
D. pKw
Deuterium reacts with oxygen to form________________?
A. Hard water
B. Heavy water
C. Soft water
D. Water gas
Keeping in view the size of atom which is in correct order___________________?
A. Mg > Sr
B. Ba > Mg
C. Lu > Ce
D. CI > 1
Which of the following is not characteristics of reversible reaction__________________?
A. whole amount of reactant does not change into product
B. chemical equilibrium is established
C. a catalyst changes the direction of reaction
D. rate of forward reaction decreases as reaction proceeds
Quantum number values for 3p orbitals are____________________?
A. n=3 l=2
B. n=3 l=0
C. n=3 l=1
D. n=3 l=3
Rate of reactions of most organic compounds are____________________?
A. very slow
B. very fast
C. slow
D. no regular character present
Concept of Triads was introduced by_______________?
A. Dobereiner
B. Newland
C. Mendeleev
D. Al-Razi
Which one of the following is not the use of graphite ?
A. Lead pencils
B. Abrasive
C. Lubricant
D. Electrode of electrolytic cell
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