During muscle contraction
Options
(a) Chemical energy is changed into electrical energy (b) Chemical energy is changed into mechanical energy (c) Chemical energy is changed into physical energy (d) Mechanical energy is changed […]
The low temperature treatment that shortens the period between sowing and the flowering is called
Options
(a) chemotaxy (b) freezing injury (c) vernalization (d) devermalization
Correct Answer:
vernalization
Explanation:
Photoperiodism is the response […]
Food in plants is transported mainly as
Options
(a) starch (b) glucose (c) glycogen (d) sucrose
Correct Answer:
sucrose
Explanation:
Carbohydrates are translocated in the phloem. Analysis of the phloem exudates of sixteen tree […]
Dark reaction occurs
Options
(a) only in light (b) only in the absence of light (c) independent of light (d) only in light & independent of light
Correct Answer:
independent of light
Explanation:
Dark […]
CO₂ fixation in bundle sheath cells occurs in
Options
(a) C₄ plants (b) C₃ plants (c) CAM plants (d) C₄ plants & C₃ plants & CAM plants
Correct Answer:
C₄ plants
Explanation:
In C₄ […]
If the value of Cp for nitrogen gas is 7 JK⁻¹mol⁻¹ , then the value of ΔH on heating 28g of nitrogen gas from 0⁰C to 100⁰C at constant pressure will be
Options
(a) […]
A gas has a vapour density 11.2.The volume occupied by 1 g of gas at NTP is
Options
(a) 1 litre (b) 11.2 litre (c) 22.4 litre (d) unpredictable
Correct Answer:
1 litre
Kinetic energy of one mole of an ideal gas at 300 K is
Options
(a) 3.48 kJ (b) 3.74 kJ (c) 37.4 kJ (d) 34.8 kJ
Correct Answer:
3.74 kJ
Explanation:
Kinetic energy […]
The oxidation state of halogen atom is ‘+3’ in
Options
(a) ClO₂ (b) Cl₂O₃ (c) Cl₂O₆ (d) I₂O₅
Correct Answer:
Cl₂O₃
Explanation:
No explanation available. Be the first to write the explanation for […]
The reaction : Ag²⁺(aq) + Ag(s) ⇌ 2Ag⁺(aq) is an example of
Options
(a) reduction (b) oxidation (c) disproportionation (d) none of these
Correct Answer:
disproportionation
Explanation:
No explanation available. Be the first […]
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