Secondary cell is_____________________?
Secondary cell is_____________________?
A. rechargeable
B. non rechargeable
C. electrolytic cell
D. Daniel cell
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In electrolytic cell electricity carries________________?
In electrolytic cell electricity carries________________?A. spontaneous reaction
B. non-wpontaneous reaction
C. neutralization
D. all of aboveIn 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%When electrons collide with heavy metals than ___________ are produced?
When electrons collide with heavy metals than ___________ are produced?A. Beta-rays
B. Alpha-rays
C. X-rays
D. Gamma-raysReplacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?
Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?A. Dows process
B. Friedel & Craft acylation
C. Friedel & Craft alkylation
D. Clemmenson reductionWhich of the following is the Radioactive isotope of Hydrogen?
Which of the following is the Radioactive isotope of Hydrogen?A. Protium
B. Deuterium
C. Tritium
D. NichromiumBoron is non-netal whereas A1 is metal. It is due to_______________________?
Boron is non-netal whereas A1 is metal. It is due to_______________________?A. Small size
B. High nuclear charge
C. Both A and B
D. No authorized justification yet