Which one of the following statements is incorrect with regard to ortho and para-dihydrogen
Options
(a) They are nuclear spin isomers (b) The ortho isomer has zero nuclear spin whereas the para isomer […]
The number of electrons involved in the reduction of one nitrate ion to hydrazine is
Options
(a) 8 (b) 5 (c) 3 (d) 7
Correct Answer:
7
Explanation:
No explanation available. Be the […]
Benzenediazonium chloride on treated with water gives
Options
(a) phenol (b) 0-chlorophenol (c) anisole (d) chlorobenzene
Correct Answer:
phenol
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Nitrobenzene is reduced to azoxybenzene using
Options
(a) Sn/HCl (b) Zn/NH₄Cl (c) As₂O₃/NaOH (d) Zn/NaOH
Correct Answer:
As₂O₃/NaOH
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The anion, (Si₆O₁₈)¹²⁻ is present in
Options
(a) pyroxene (b) beryl (c) mica (d) albite
Correct Answer:
beryl
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The number of carbon atoms in Buckminsterfullerene is
Options
(a) 50 (b) 350 (c) 60 (d) 70
Correct Answer:
60
Explanation:
Buckminsterfullerene has the formula C₆₀ and is made from interlocking hexagonal and […]
The main reason that SiCl₄ is easily hydrolysed as compared to CCl₄ is that
Options
(a) Si – Si bond is weaker (b) SiCl₄ can form hydrogen bonds (c) SiCl₄ is covalent (d) […]
Which one of the following does not react with water even under red hot condition
Options
(a) Na (b) Be (c) Ca (d) K
Correct Answer:
Be
Explanation:
No explanation available. Be the […]
The polymer used in orthopaedic devices and in controlled drug release is
Options
(a) Orlon (b) PTFE (c) SBR (d) PHBV
Correct Answer:
PHBV
Explanation:
No explanation available. Be the first to write […]
The number of primary, secondary and tertiary carbons in 3,4-dimethylheptane are respectively
Options
(a) 4,3 and 2 (b) 2,3 and 4 (c) 4,2 and 3 (d) 3,4 and 2
Correct Answer:
4,3 and […]
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