The bonding present in nitrogen molecules is:
1. \(p\pi-p\pi\)
2. \(p\pi-d\pi\)
3. \(d\pi-d\pi\)
4. Only sigma bond
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is true about reactivity of group 15 elements?
1. Stability of their hydrides increases down the group.
2. Higher oxides are acidic in nature.
3. All elements form pentahalides.
4. They do not react with metals.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe element from group 15 that forms a strong bond with hydrogen is:
1. N
2. P
3. As
4. Sb
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe condition that does not exist in the Haber process
for the manufacturing of ammonia is?
1. Pressure (around 200 ×105 Pa)
2. Temperature (700 K)
3. Catalyst such as iron oxide
4. Presence of inert gases
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNumber of moles of copper used when
(i) Copper reacts with dilute nitric acid
(ii) Copper reacts with concentrated nitric acid
are respectively:-
1. 1,1
2. 1,3
3. 3,1
4. 3,3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
An element that does not have a d-orbital is:
1. P
2. N
3. As
4. Bi
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is incorrect about red phosphorus?
1. It is hard and crystalline.
2. It is poisonous.
3. It is less reactive than white phosphorus.
4. It is insoluble in water.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich element exhibits the highest catenation property?
1. Phosphorus
2. Nitrogen
3. Antimony
4. Bismuth
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe electron gain enthalpy values for O → O– and O → O2– are –141 and 702 kJ mol-1 , respectively. The correct statement about the formation of oxides is-
1. | Higher the electron gain enthalpy lower is the lattice energy. |
2. | Higher the electron gain enthalpy higher is the lattice energy. |
3. | Higher the electron gain enthalpy higher is the stability of oxide. |
4. | O- is more stable than O2- |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe group which contains the strongest oxidizing agent is-
1. Group 15
2. Group 16
3. Group 17
4. Group 18
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology