When a common salt is added to the saponified product of oil, the soap is thrown out because
Options
(a) common salt is an ionic compound (b) conc.of sodium ion is increased (c) […]
The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 V. The equilibrium constant for the reaction of the cell is
Options
(a) 10²⁵ (b) 10²° […]
In electrolysis of NaCl when Pt electrode is taken then H₂ is liberated at cathode while with Hg cathode it forms sodium amalgam
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(a) Hg is more inert than Pt (b) More […]
The crystal structure of solid Mn(II) oxide is
Options
(a) NaCl structure (b) Fe₂O₃ structure (c) CaF₂ structure (d) Na₂O structure
Correct Answer:
NaCl structure
Explanation:
No explanation available. Be the first to […]
The pyknometric density of sodium chloride crystal is 2.165 x 10³ kg m⁻³, while its X-rays density is 2.178 x 10³ kg m⁻³. The fraction of unoccupied sites in sodium chloride crystal is
Options […]
In which of the following hydrocarbons, hydrogen is most acidic
Options
(a) CH₂=CH₂ (b) CH≡CH (c) CH₃ -CH₃ (d) none of these
Correct Answer:
CH≡CH
Explanation:
No explanation available. Be the first to […]
Both ethan and methane can be obtained in one step reaction from
Options
(a) CH₃OH (b) C₂H₅OH (c) CH₃Br (d) C₂H₄
Correct Answer:
CH₃Br
Explanation:
No explanation available. Be the first to write […]
Gasoline is a mixture of hydrocarbons containing
Options
(a) C₃ to C₅ carbon atoms (b) C₇ anf C₉ carbons atoms (c) C₁₂ to C₁₆ carbons atoms (d) C₁₄ to C₁₈ carbon atoms
If we want to study relative arrangement of atoms in a molecule we study
Options
(a) empirical formula (b) molecular formula (c) structural formula (d) none of these
Correct Answer:
structural formula
Explanation: […]
The correct order of stability of the superoxides is
Options
(a) KO₂ > RbO₂ > CsO₂ (b) KO₂ > CsO₂ > RbO₂ (c) CsO₂ > RbO₂ > KO₂ (d) RbO₂ > CsO₂ > […]
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