On heating sodium metal in dry ammonia, the compound formed is
Options
(a) sodium hydride (b) sodium azide (c) sodium nitride (d) sodium amide
Correct Answer:
sodium amide
Explanation:
No explanation available. Be […]
The surface tension of which of the following liquid is maximum
Options
(a) C₂H₅OH (b) CH₃OH (c) H₂O (d) C₆H₆
Correct Answer:
H₂O
Explanation:
Hydrogen bonding in H₂O > C₂H₅OH > CH₃OH . […]
The hybridisation of carbons of C-C single bond of HC ≡C-CH =CH₂ is
Options
(a) sp³ – sp³ (b) sp – sp² (c) sp³ – sp (d) sp² – sp³
Correct Answer:
sp […]
Which of the following compounds can exist in optically active form
Options
(a) 1-Butanol (b) 2-Butanol (c) 3-Pentanol (d) 4-Heptanol
Correct Answer:
2-Butanol
Explanation:
No explanation available. Be the first to write the […]
Which one of the following dfects in the crystals lowers its density
Options
(a) Frenkel defect (b) Schottky defect (c) f-centres (d) Interstitial defect
Correct Answer:
Schottky defect
Explanation:
No explanation available. Be […]
The pH value of 0.02 M ammonia solution, which is 5% ionised, will be
Options
(a) 7 (b) 5 (c) 2 (d) 11
Correct Answer:
11
Explanation:
No explanation available. Be the first […]
The spin only magnetic moment of [CrF₆]⁴⁻ (atomic number for Cr is 24) is
Options
(a) 0 (b) 1.73BM (c) 2.83BM (d) 4.9BM
Correct Answer:
4.9BM
Explanation:
No explanation available. Be the first […]
In an exothermic reaction(reversible) which of the following has positive value
Options
(a) Enthalphy (b) Entrophy (c) Gibb’s Free Energy (d) None of these
Correct Answer:
Gibb’s Free Energy
Explanation:
No explanation available. […]
Which of the following reacts with chloroform and a base to form phenylisocyanide
Options
(a) Benzene (b) Aniline (c) Nitrobenzene (d) Phenol
Correct Answer:
Aniline
Explanation:
No explanation available. Be the first to […]
Which colourless gas evolves, when NH₄ Cl reacts with zinc in a dry cell battery
Options
(a) NH₃ (b) N₂ (c) H₂ (d) Cl₂
Correct Answer:
H₂
Explanation:
No explanation available. Be the […]
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