Unpleasent smelling carbylamines are formed by heating alkali and chloroform with
Options
(a) any primary amine (b) any amine (c) any aromatic amine (d) any aliphatic amine
Correct Answer:
any primary amine
Explanation: […]
The volume of water to be added to 100 cm³ of 0.5 N H₂SO₄ to get decinormal concentration is
Options
(a) 450 cm³ (b) 100 cm³ (c) 400 cm³ (d) 500 CM³
Correct […]
The amount of zinc required to produce 224mL of H₂ at STP on treatment with dilute H₂SO₄ will be
Options
(a) 65 g (b) 0.065 g (c) 0.65 g (d) 6.5 g
Correct […]
The Ca²⁺ and F⁻ are located in CaF₂ crystal,respectively at face centred cubic lattic points and in
Options
(a) tetrahedral voids (b) half of tetrahedral voids (c) octahedral voids (d) half of octahedral […]
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 […]
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