Secondary productivity is rate of formation of new organic matter by
Options
(a) Parasite (b) Consumer (c) Decomposer (d) Producer
Correct Answer:
Consumer
Explanation:
No explanation available. Be the first to write the […]
Which of the following represent maximum number of species among global biodiversity?
Options
(a) Lichens (b) Fungi (c) Mosses and Ferns (d) Algae
Correct Answer:
Fungi
Explanation:
No explanation available. Be the first to […]
A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is :
Options
(a) Symbiosis (b) Commensalism (c) Amensalism (d) Ectoparasitism
Correct Answer:
Commensalism
Explanation:
Sea anemone gets […]
Seed coat is not thin membranous in
Options
(a) coconut (b) groundnut (c) maize (d) gram
Correct Answer:
coconut
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Which of the following is paramagnetic?
Options
(a) O₂⁻ (b) CN⁻ (c) NO⁺ (d) CO
Correct Answer:
O₂⁻
Explanation:
O₂⁻ (17) = σ1s², σ*1s², σ2s², σ*2s², σ2pₖ², π2pᵢ² = π2pⱼ², π*2pᵢ² = π*2pⱼ¹
XeF₂ is isostructural with:
Options
(a) ICl₂⁻ (b) SbCl₃ (c) BaCl₂ (d) TeF₂
Correct Answer:
ICl₂⁻
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting […]
Which one of the following molecules contains no π bond?
Options
(a) H₂O (b) SO₂ (c) NO₂ (d) CO₂
Correct Answer:
H₂O
Explanation:
All the molecules have O atom with lone pairs, but […]
6.02 x 10²° molecules of urea are present in 100 mL of its solution. The concentration of the solution is
Options
(a) 0.01 M (b) 0.001 M (c) 0.1 M (d) 0.02 M
Which of the following is electron-deficient?
Options
(a) (SiH₃)₂ (b) (BH₃)₂ (c) PH₃ (d) (CH₃)₂
Correct Answer:
(BH₃)₂
Explanation:
Electron deficient molecules are compounds which do not have sufficient number of eletrons to […]
What is the maximum number of electrons that can be associated with the following set of quantum numbers? n=3, l=1 and m=–1
Options
(a) 6 (b) 4 (c) 2 (d) 10
Correct Answer: […]
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