Dimorphic chloroplasts are present in
Options
(a) Sugarcane(C₄) (b) Cotton (c) Pea (d) Mango
Correct Answer:
Sugarcane(C₄)
Explanation:
Sugarcane is C₄ plant. The chloroplasts in C₄ leaves are dimorphic (Two morphologically) distinct types). […]
Which of the following substances has the highest elasticity?
Options
(a) Steel (b) Copper (c) Rubber (d) Sponge
Correct Answer:
Steel
Explanation:
No explanation available. Be the first to write the explanation for this […]
A wire is stretched under a force. If the wire suddenly snaps the temperature of the wire
Options
(a) remains the same (b) decreases (c) increases (d) first decreases then increases
Correct Answer:
increases
At what temperature will the rms speed of air molecules be double that of NTP?
Options
(a) 519⁰C (b) 619⁰C (c) 719⁰C (d) 819⁰C
Correct Answer:
819⁰C
Explanation:
v(rms) = √(3RT / M) […]
Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units respectively. The rms speed is
Options
(a) 4 units (b) 1.7 units (c) 4.2 units (d) […]
Two point objects of masses 1.5 g and 2.5 g respectively are at a distance of 16 cm apart, the centre of gravity is at a distance x from the object of mass 1.5 gm […]
Which bacterium is used extensively as biopesticide?
Options
(a) Bacillus subtilis (b) Streptococcus lactis (c) Bacillus thuringienesis (d) Lactobacillus acidophilus
Correct Answer:
Bacillus thuringienesis
Explanation:
No explanation available. Be the first to write […]
The radius of curvature of a concave mirror is 24 cm and the imager is magnified by 1.5 times. The object distance is
Options
(a) 20 cm (b) 8 cm (c) 16 cm […]
The weight of a body on surface of earth is 12.6 N. When it is raised to a height half the radius of earth its weight will be
Options
(a) 2.8 N (b) […]
A car moving with a velocity of 36 km/hr crosses a siren of frequency 500 Hz. The apparent frequency of siren after passing it will be
Options
(a) 520 Hz (b) 485 Hz (c) […]
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