Parke’s process is used in the extraction of________?
Parke’s process is used in the extraction of________?
A. Iron
B. Sodium
C. Silver
D. Zinc
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Which one of the following compound does not have – OH group___________________?
Which one of the following compound does not have – OH group___________________?A. ethylene glycol
B. glycerol
C. picric acid
D. ethyl acetateWhich of the following elements react with steam to produce H2 gas?
Which of the following elements react with steam to produce H2 gas?A. Pd
B. Ni
C. Sn
D. All of the above50% inversion of configuration of molecules take place in a___________________?
50% inversion of configuration of molecules take place in a___________________?A. E1 – reaction
B. E2 – reaction
C. SN1 – reaction
D. SN2 – reactionIn pig iron the concentration of C-atom is ___________________?
In pig iron the concentration of C-atom is ___________________?A. 0.12 — 0.25%
B. 2.5 — 4.5%
C. 2.0 — 4.0%
D. 0.25 — 2.5%Milikan used ______________ in his atomizer?
Milikan used ______________ in his atomizer?A. Milk
B. Honey
C. Oil
D. WaterThe PH of pure water at 25°C, kw=1×10-4____________?
The PH of pure water at 25°C, kw=1×10-4____________?A. 0
B. 7
C. 14
D. None of above