Which of the following glass is used in making wind screen of automobiles
Options
(a) Jena (b) Pyrex (c) Safety (d) Crooke’s
Correct Answer:
Safety
Explanation:
No explanation available. Be the first to […]
Which does not exist
Options
(a) [SiCl₂]²⁻ (b) [GeF₆]²⁻ (c) [CCl₆]²⁻ (d) [SnCl₆]²⁻
Correct Answer:
[CCl₆]²⁻
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting […]
In the aluminothermite process , aluminium acts as
Options
(a) an oxidising agent (b) a flux (c) a solder (d) a reducing agent
Correct Answer:
a reducing agent
Explanation:
The method of obtaining […]
Which of the following is not hydrolysed easily
Options
(a) CCl₄ (b) SiCl₄ (c) GeCl₄ (d) SnCl₄
Correct Answer:
CCl₄
Explanation:
No explanation available. Be the first to write the explanation for this […]
The products of the following reaction are
Options
(a) SiC and CO₂ (b) SiO and CO (c) SiC and CO (d) Si and CO₂
Correct Answer:
SiC and CO
Explanation:
No explanation available. […]
The diagonal partner of element B is
Options
(a) Li (b) Al (c) Si (d) Mg
Correct Answer:
Si
Explanation:
No explanation available. Be the first to write the explanation for this question […]
The products formed when diborane is hydrolysed are
Options
(a) B₂O₃ and H₃BO₃ (b) B₂O₃ only (c) H₃ BO₃ and H₂ (d) H₃BO₃ only
Correct Answer:
H₃ BO₃ and H₂
Explanation:
No explanation […]
Germanium of very high purity is obtained by
Options
(a) liquation (b) vapour phase refining (c) distilation (d) zone refining
Correct Answer:
zone refining
Explanation:
Metals of high purity are obtained by zone refining, […]
The element that does not show catenation among the following p-block elements is
Options
(a) carbon (b) silicon (c) germanium (d) lead
Correct Answer:
lead
Explanation:
No explanation available. Be the first to […]
Reaction of diborane with ammonia gives initially
Options
(a) B₂H₆.NH₃ (b) Borazole (c) B₂H₆.3NH₃ (d) [BH₂(NH₃)₂]⁺ [BH₄]⁻
Correct Answer:
[BH₂(NH₃)₂]⁺ [BH₄]⁻
Explanation:
No explanation available. Be the first to write the explanation for […]
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