Which one can form complex ?
A. Na
B. Cr
C. Li
D. K
Submitted by :- Jamil Ahmed
Second ionization potential of alkali metals are very high due to_______________?
A. being s-block elements
B. inert gas configurations
C. ns1 electronic configuration
D. being metals
Submitted by :- Jamil Ahmed
Sodium is not observed in +2 oxidation state because of its__________________?
A. high first ionization potential
B. high second ionization potential
C. high ionic radius
D. high electronegativity
Submitted by :- Jamil Ahmed
Which one of the following pairs shown diagonal relationship in the periodic table ?
A. Sodium and Lithium
B. Lithium and magnesium
C. Lithium and beryllium
D. Boron and Beryllium
Submitted by :- Jamil Ahmed
Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?
A. Lithium
B. Sodium
C. Potassium
D. Rubidium
Submitted by :- Jamil Ahmed
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 reduction
Submitted by :- Jamil Ahmed
During sulphonation of benzene H2SO4 generates the electrophile _________________?
A. HSO4-
B. SO2
C. SO3
D. H+
Submitted by :- Jamil Ahmed
Reacting bromine with benzene in the presence of sunlight will result in_______________?
A. The rupturing of benzene ring
B. Substitution reaction
C. Addition reaction
D. No-reaction
Submitted by :- Jamil Ahmed
Which one of the following methods will not give benzene ?
A. Heating sod. Salt of Benzoic acid with soda lime
B. Distilling phenol with Zn dust
C. Chlorobenzene with NaOH at 36°C & 15atm.
D. Hydrolysis of benzene sulphonic acid with super heated steam
Submitted by :- Jamil Ahmed