Which one of the following oxides is expected to exhibit paramagnetic behaviour?
Options
(a) CO₂ (b) SiO₂ (c) SO₂ (d) ClO₂
Correct Answer:
ClO₂
Explanation:
It is because of odd number of electrons […]
Which of the following species has four lone pairs of electrons?
Options
(a) I (b) O⁻ (c) Cl⁻ (d) He
Correct Answer:
Cl⁻
Explanation:
No explanation available. Be the first to write the […]
Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is :
Options
(a) Ca < Mg < P< Cl (b) Mg < Ca < Cl < P (c) […]
Which one of the following elements has the maximum electron affinity?
Options
(a) F (b) Cl (c) Br (d) I
Correct Answer:
Cl
Explanation:
Chlorine hasmaximum electron affinity. Fluorine although have highest electronegativity […]
Which of the following is a pair of isoelectronic species?
Options
(a) Cl₂O₃, ICl₂⁻ (b) ICl₂⁻, CIO₂ (c) IF₂⁺, I₃⁻ (d) CIO₂⁻, CIF₂⁺
Correct Answer:
CIO₂⁻, CIF₂⁺
Explanation:
Number of electrons in CIO₂⁻ […]
An organic compound containing C, H, N gave the following analysis: C=40%; H=13.33%; N=46.67%. Its empirical formula would be
Options
(a) C₂H₇N₂ (b) CH₅N (c) CH₄N (d) C₂H₇N
Correct Answer:
CH₄N
Explanation:
At […]
Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear?
Options
(a) CH₃-CH=CH-CH₃ (b) CH₃-C≡C-CH₃ (c) CH₂=CH-CH₂-C≡CH (d) CH₃-CH₂-CH₂-CH₃
Correct Answer:
CH₃-C≡C-CH₃
Explanation:
sp³ sp […]
An organic compound containing C, H and O gave the following analysis: C=40%; H=6.66%; Its empirical formula would be
Options
(a) C₃H₆O (b) CHO (c) CH₂O (d) CH₄O
Correct Answer:
CH₂O
Explanation:
At […]
Identify the correct order of the size of the following elements: Ca, K, Ar,Cl,S
Options
(a) Ca²⁺< K⁺< Ar < Cl⁻ < S²⁻ (b) Ar < Ca²⁺< K⁺< Cl⁻< S²⁻ (c) Ca²⁺< Ar […]
A bromoalkane contains 35% carbon and 6.57% hydrogen by mass. Calculate the empirical formula of this bromoalkane.
Options
(a) CH₂Br (b) C₂H₂Br₂ (c) C₄H₄Br (d) C₄H₉Br
Correct Answer:
C₄H₉Br
Explanation:
1) Assume 100 […]
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