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When an aldehyde is reacted with hydrogen cyanide a ” Cyanihydrin” is formed. This process is best termed as __________?
A. Electrophilic addition B. Electrophilic substitution C. Nucleophilic addition D. Necleophilic substitution Submitted by :- Jamil Ahmed
which of the following are chemical changes?
A) Cooking of Food B) Digestion of Food C) Freezing of water D) Water is heated up A) A & B B) A,…
The most appropriate method for separating a large quantity of a mixture of nonvolatile, nonpolar organic compounds would be__________?
A. Distillation B. Extraction C. Gas chromatography D. Column chromatography Submitted by :- Jamil Ahmed
The number of lone pairs in XeOF4 is_________?
A. 0 B. 1 C. 2 D. 3 Submitted by :- Jamil Ahmed
Which of the following is a non metal that remains liquid at room temperature ?
A) Chlorine B) Phosphorous C) Bromine D) Helium Submitted by :- Muhammad Nawaz
What is the Iupac name for the compound shown below.
A) 1-Bromo-3-chlorocyclohexene B) 2-Bromo-6-chlorocyclohex-1-ene C) 6-Bromo-2-chlorocyclohexene D) 3-Bromo-1-chlorocyclohex-1-ene Submitted by :- Muhammad Nawaz
The O-O linkage is present in__________?
A. H2S2O3 B.H2SO8 C. H2S4O6 D. H2 S2 O6 Submitted by :- Jamil Ahmed
Silver Mirror test is given by which one of the following compounds?
1. Benzophenone 2. Acetaldehyde 3. Acetone 4. Formaldehyde A) Only 1 B) Only 2 C) 1 and 3 D) 2 and 4 Submitted…
SI unit of equivalent conductance
A) ohm/cm B) Siemens m2/equivalent C) Siemens/equivalent D) mho/cm Submitted by :- Muhammad Nawaz
Hydrogen bomb is based on the principle of
A) nuclear fission B) nuclear fusion C) natural radioactivity D) artificial radioactivity Submitted by :- Muhammad Nawaz