Which of the following compounds does not form an ozonide?
Aryl halides are less reactive towards nucleophilic substitution reactions as compared to akyl halides due to
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In its reaction with silver nitrate acetylene shows
A salt gives viotlet vapours when treated with conc. H₂SO₄, it contains
Which of the following sets of quantum numbers is correct for an electron in 4f-orbitals?
If the radius of first Bohr orbit be a₀, then the radius of the third orbit of hydrogen would be
Which of the following group represents a collection of iso-electronic species?(At.nos.N = 7, F = 9 and Na = 11)
Which of the following compounds has a smallest bond angle in its molecule?
Which of the following molecule has dipole moment greater than zero?
Since enthalpy of elements in their natural state is taken to the zero .The value of ∆Hf of compounds
A vessel at equilibrium, contains SO₃, SO₂ and O₂. Now some helium gas is added, so that total pressure increases while temperature and volume remain constant. According to Le-Chatelier's principle, the dissociation of SO₃
Heat of combustion ΔH for C(s), H2(g) and CH4(g) are -94, -68 and -213 cal/mol. Then ΔH for C(s) + 2H2(g) → CH4(g) is
The compound having only primary hydrogen atoms is :
The number of geometrical isomers from [Co(NH₃)₃(NO₂)₃] is
During smelting an additional substance is added which combines with impurities to form a fusible product. It is known as
16 gm of oxygen and 3 gm of hydrogen are mixed and kept in 760 mm pressure at 0oC. The total volume occupied by the mixture will be nearly
In Solvay ammonia process, sodium bicarbonate is precipitated due to
A gas is said to behave like an ideal gas when the relation PV/T = consatnt. When do you expect a real gas to behave like an ideal gas ?
Which of the following statement is not true about potash alum?
Method used for obtaining highly pure silicon used as a semiconductor material, is
Which element from group 15 gives most basic compound with hydrogen ?
The products of the chemical reaction between Na₂S₂O₃, Cl₂ and H₂O are
4 videos|8 docs|51 tests
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4 videos|8 docs|51 tests
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