In piped water supply system, water is often treated with chlorine to
In piped water supply system, water is often treated with chlorine to Options (a) remove hardness (b) kill germs (c)…
In piped water supply system, water is often treated with chlorine to Options (a) remove hardness (b) kill germs (c)…
Which of the following is the source of energy for muscle contraction? Options (a) actin (b) actomyosin (c) myosin (d)…
Gibberellins can promote seed germination because of their influence on Options (a) rate of cell division (b) production of hydrolyzing…
Structure found in blue green algae which helps in nitrogen fixation is Options (a) Heterocyst (b) Holotrema (c) Haplosperm (d)…
Which part of the leaf is meant for photosynthesis and gaseous exchange? Options (a) bundle sheath with chloroplasts (b) bundle…
A good example of organic fertilizer which improves phosphorus uptake is Options (a) actinomycetes fungi (b) Rhizobium (c) Azospirillum (d)…
Then process of the escape of liquid from tip of uninjured leaf is called Options (a) guttation (b) transpiration (c)…
Automobile exhaust causes respiratory problems because of the presence of Options (a) CO (b) CH₄ (c) chlorine (d) NO₂ Correct…
Which of the following gene is responsible for biological nitrogen fixation Options (a) nitrogenase (b) Nif gene (c) yeast alanine…
Photochemical smog formed in congested metropolitan cities mainly consists of Options (a) ozone, peroxyacetyl nitrate and NOₓ (b) smoke, peroxyacetyl…