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mnsoomro
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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
Which is the third most abundant element in the nature?
Oxygen Aluminum Sulphur Hydrogen Submitted by :- Muhammad Nawaz
Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone ?
A. primary alcohol B. secondary alcohol C. tertiary alcohol D. dihydric alcohol Submitted by :- Jamil Ahmed
Which one of the following species is not an electrophile?
A. NH3 B. Br+ C. H+ D. BF3 Submitted by :- Jamil Ahmed
Which is the second anciently known metal?
Copper Nickel Silver Gold Submitted by :- Muhammad Nawaz
The ether used in Wurtz synthesis is__________________?
A. acidic B. basic C. aqueous D. dry Submitted by :- Jamil Ahmed
Which ore is/are used for Hg extraction?
Cinnabar Zinc blende Calamine All of these Submitted by :- Muhammad Nawaz