Which of the following will be most stable diazonium salt RN₂⁺ X⁻
Options
(a) CH₃N₂⁺ X⁻ (b) C₆H₅N₂⁺ X⁻ (c) CH₃CH₂N₂⁺ X⁻ (d) C₆H₅CH₂N₂⁺ X⁻
Correct Answer:
C₆H₅N₂⁺ X⁻
Explanation:
Aromatic diazonium salts are […]
Which of the following statements is correct for the spontaneous adsorption of a gas
Options
(a) ΔS is negative and therefore, ΔH should be highly positive (b) ΔS is negative and therefore ,ΔH […]
Which of the following species has plane triangular shape
Options
(a) N₃ (b) NO₃⁻ (c) NO⁻₂ (d) CO₂
Correct Answer:
NO₃⁻
Explanation:
Hybridization of NO₃⁻=1/2 (5+0+1-0) = 6/2=3=sp² hence geometry is trigonal planner. NO₂⁻ […]
Which of the following salts will give highest pH in water
Options
(a) KCl (b) NaCl (c) Na₂CO₃ (d) CuSO₄
Correct Answer:
Na₂CO₃
Explanation:
Na₂CO₃ is a salt of strong base (NaOH) and weak […]
Which of the following organic compounds polymerizes to form the polyester Dacron
Options
(a) Propylene and para HO – (C₆H₄) – OH (b) Benzoic acid and ethanol (c) Terephthalic acid and ethylene glycol […]
Which of the following organic compounds has same hybridization as its combustion product (CO₂)
Options
(a) Ethane (b) Ethyne (c) Ethene (d) Ethanol
Correct Answer:
Ethyne
Explanation:
The combustion reaction of ethylene is […]
Which of the following orders of ionic radii is correctly represented
Options
(a) H⁻ > H⁺ > H (b) Na⁺ > F⁻ > O²⁻ (c) F⁻ > O²⁻ > Na⁺ (d) Al³⁺ > Mg²⁺ […]
Which of the following molecules has the maximum dipoles moment
Options
(a) CO₂ (b) CH₄ (c) NH₃ (d) NF₃
Correct Answer:
NH₃
Explanation:
No explanation available. Be the first to write the explanation […]
Which of the following hormones is produced under the conditions of stress which stimulate glycogenolysis in the liver of human beings
Options
(a) Thyroxin (b) Insulin (c) Adrenaline (d) Estradiol
Correct Answer:
Adrenaline
Which of the following compounds will undergo racemisation when solution of KOH hydrolyses
Options
(a) (i) and (ii) (b) (ii) and (iv) (c) (iii) and (iv) (d) (i) and (iv)
Correct Answer:
none
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