In the Dumas method of estimation of nitrogen,the nitrogen in the organic compound is finally converted into
Options
(a) NO₂ (b) N₂ (c) NH₃ (d) (NH₄)₂SO₄
Correct Answer:
N₂
Explanation:
No explanation available. […]
The energy of an electron in the 3rd orbit of hydrogen atom is -E. The energy of an electron in the Ist orbit is
Options
(a) -3E (b) -E/3 (c) -E/9 (d) -9E
What is the amount of Chlorine evolved,when 2A of current is passed for 30 minutes in an aqueous solution of NaCl
Options
(a) 9.81g (b) 1.32g (c) 4.56g (d) 12.6g
Correct Answer:
1.32g
The enthalphy change for the reaction N₂ + 3H₂ → 2NH₃ is -92.38 kJ at 298K. The internal energy change at 298K is
Options
(a) -92.38 kJ (b) -87.42 kJ (c) -97.34 kJ […]
A compound gives a positive test with I₂/NaOH and is extracted from benzene from benzen by saturated NaHSO₃.The compound is
Options
(a) CH₃(CH₂)₄CHO (b) CH₃(CH₂)₃COCH₃ (c) CH₃CH₂COCH₂CH₃ (d) CH₂(CH₂)₄ CH₂OH
Correct Answer:
CH₃(CH₂)₃COCH₃
When a mixture of solid Nacl and solid K₂Cr₂O₇ is heated with concentrated sulphuric acid, the orange red vapours obtained are due to
Options
(a) chromic chloride (b) chromous chloride (c) chromyl chloride […]
Methyl bromide and ethyl bromide are mixed in equal proportion and the mixture is treaded with sodium,the number of possible organic products is
Options
(a) 1 (b) 2 (c) 3 (d) 4
Correct […]
Cellulose is a
Options
(a) hexapolysaccharide (b) pentapolysaccharide (c) tripolysaccharide (d) none of these
Correct Answer:
none of these
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Milk is an emulsion of
Options
(a) fat dispersed in milk (b) fat dispersed in water (c) water dispersed in oil (d) water dispersed in fat
Correct Answer:
fat dispersed in water
Gasoline has composition
Options
(a) C₈–C₁₂ (b) C₂–C₅ (c) C₆–C₁₁ (d) none of these
Correct Answer:
C₆–C₁₁
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
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