The formula of chlorophyll-a is
Options
(a) C₅₆H₇₀O₆N₄ Mg (b) C₅₅H₇₂O₆N₄ Mg (c) C₅₅H₇₂O₅N₄ Mg (d) C₅₂H₇₀O₅N₄ Mg
Correct Answer:
C₅₅H₇₂O₅N₄ Mg
Explanation:
Chlorophyll ‘a’ has molecular formula of C₅₅H₇₂O₅N₄ Mg . Its […]
Growth in numbers is maximum in the zone of
Options
(a) cell maturation (b) cell division (c) cell elongation (d) cell maturation & cell division & cell elongation
Correct Answer:
cell division
Explanation:
Zone […]
Hydrogen cannot be obtained by
Options
(a) Mg + H₂SO₄ (b) Mg + H₂O (c) Zn + dil. H₂SO₄ (d) Zn + dil.HNO₃
Correct Answer:
Zn + dil.HNO₃
Explanation:
No explanation available. Be […]
Pure nascent hydrogen is based obtained by
Options
(a) Na and C₂H₅OH (b) Al and NaOH (c) Zn and dil.H₂SO₄ (d) all of these
Correct Answer:
Zn and dil.H₂SO₄
Explanation:
No explanation available. […]
Pollination is best defined as
Options
(a) growth of pollen tube in ovule (b) Trasnfer of pollen from another to stigma (c) visiting of flowers by insects (d) germination of pollen grains
Correct […]
The development of a sporophyte from gametophytic tissue is called
Options
(a) amphimixis (b) apogamy (c) parthenogenesis (d) apospory
Correct Answer:
apogamy
Explanation:
No explanation available. Be the first to write the explanation […]
Upon fertilization while ovule develops into seed, which structure develops from a nucleus?
Options
(a) pericarp (b) testa (c) perisperm (d) tegmen
Correct Answer:
perisperm
Explanation:
No explanation available. Be the first to […]
CO₂ is obtained by heating
Options
(a) NaHCO₃ (b) Na₂CO₃ (c) MgCO₃ (d) K₂CO₃
Correct Answer:
NaHCO₃
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Melting point is the higher for
Options
(a) Ga (b) B (c) In (d) Al
Correct Answer:
B
Explanation:
In the boron family the melting point decreases on moving down the group upto […]
Isoprene is used for the preparation of
Options
(a) teflon (b) rubber (c) nylon 66 (d) nylon
Correct Answer:
rubber
Explanation:
No explanation available. Be the first to write the explanation for this […]
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