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Vinylacetylene combines with HCI to form___________________?
A. polyacetylene B. benzene C. chloroprene D. divinyl acetylene Submitted by :- Jamil Ahmed
Raney nickel is prepared from ______________________ by treating with caustic soda?
A. Ni-Cu alloy B. Ni-Al alloy C. Ni-Fe alloy D. Ni-Mg alloy Submitted by :- Jamil Ahmed
Which element is a refractory substance?
Cr Fe Al Ni Submitted by :- Muhammad Nawaz
What is the formula of Cryolite?
NaзAIF4 Na3AIF6 Na3AIF3 Na3AIF5 Submitted by :- Muhammad Nawaz
Reactivity due to pi-electrons is present in_________________?
A. alkane B. alkene C. alkyne D. both B & C Submitted by :- Jamil Ahmed
Removal of halogen and hydrogen atom is_________________?
A. halogenation B. dehalogenation C. dehydrohalogenation D. hydrohalogenation Submitted by :- Jamil Ahmed
Which steps is/are involved in the metallurgy of aluminium?
Electrolytic reduction of alumina Refining of aluminum Purification of bauxite All of these Submitted by :- Muhammad Nawaz
Which alkyl halide has the highest reactivity for a particular alkyl group ?
A. R-F B. R-C C. R-Br D. R-I Submitted by :- Jamil Ahmed
Which impurities are present with the bauxite?
Silica Alumina Both silica and ferric oxide Ferric oxide Submitted by :- Muhammad Nawaz
Aluminium is typically extracted from which of the following?
Feldspar Alumite Bauxite Cryolite Submitted by :- Muhammad Nawaz