Class 12 Chemistry Chapter 7 p Block Elements MCQs | Class 12 Chemistry Chapter 7 p Block Elements Very Short Questions and Answers
Questions
1
Which catalyst is used in the haber process for the manufacture of NH3
Answer:Fe+Mo
4
Which of the following is manufactured from the molecular nitrogen by bacteria
Answer:NO3
5
Which of the following Tendencies remains unchanged on going down in the nitrogen family
Answer: Highest Oxi. State
6
(NH4)2 Cr2O7 on heating liberates a gas. The same gas will be obtained by
Answer: Heating NH4NO2
7
When plants and animals decay, the organic N is converted in to inorganic N. The inorganic N is in the form is
Answer: NH3
12
The element which catches fire in air at 30°C and is stored under water is
Answer:Phosphorous
17
The cyaide ion, CN–, N2 are iso electronic. But in contrast to CN–, N2 is chemically inert because of
Answer:Presence of more number of electron in bonding orbilats
18
When lighting flash is produced, which gas may form
Answer:Nitrogen pentoxide
19
A mixture of ammonia and air at about 800°C in the presence of Pt gauze forms
Answer:NO
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