Reactivity due to pi-electrons is present in_________________?
A. alkane
B. alkene
C. alkyne
D. both B & C
Submitted by :- Jamil Ahmed
CHEMISTRY
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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 ?
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
The best method of preparation of alkyl halides is a reaction of alcohol with__________________?
A. Zn / HCI
B. SOCl2 / Pyridine
C. PCI3
D. PCI5
Submitted by :- Jamil Ahmed
In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________?
A. two
B. three
C. one
D. four
Submitted by :- Jamil Ahmed
Which of the following is not an ore of aluminium?
- Bauxite
- Cryolite
- Monazite
- Mica
Submitted by :- Muhammad Nawaz
Which one of the following molecules does not form alcohol when reacts with Grignard reagent ?
A. formaldehyde
B. propanone
C. acetaldehyde
D. carbon dioxide
Submitted by :- Jamil Ahmed