Purines possess nitrogen at
Purines possess nitrogen at
Options
(a) 1,2,4 and 6 positions (b) 1,3,5 and 7 positions (c) 1,3,7 and 9 positions (d) 1,2,6 and 8 positions
Correct Answer:
1,3,7 and 9 positions
Explanation:
No […]
WB2010
Cell theory is not applicable for
Cell theory is not applicable for
Options
(a) bacteria (b) fungus (c) algae (d) virus
Correct Answer:
virus
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Ortho and para-hydrogen have
Ortho and para-hydrogen have
Options
(a) identical chemical but different physical properties (b) identical physical and chemical properties (c) identical physical but different chemical properties (d) different physical and chemical properties
Correct Answer: […]
Aspirin is chemically
Aspirin is chemically
Options
(a) methyl benzoate (b) ethyl salicylate (c) acetyl salicylic acid (d) o-hydroxy benzoic acid
Correct Answer:
acetyl salicylic acid
Explanation:
No explanation available. Be the first to write the […]
Which one of the following is produced when acetone is saturated with HCl gas
Which one of the following is produced when acetone is saturated with HCl gas
Options
(a) Acetone alcohol (b) Phorone (c) Mesityl oxide (d) Benzene
Correct Answer:
Mesityl oxide
Explanation:
No explanation available. […]
In which of the following molecules is hydrogen bridge bond present
In which of the following molecules is hydrogen bridge bond present
Options
(a) Water (b) Inorganic benzene (c) Diborane (d) Methanol
Correct Answer:
Diborane
Explanation:
No explanation available. Be the first to write […]
The blood does not clot inside the body because of
The blood does not clot inside the body because of
Options
(a) oxygenation of blood (b) movement of blood (c) heparin of blood (d) absence of fibrinogen in blood
Correct Answer:
heparin of […]
Cell division cannot be stopped in which phase of the cell cycle?
Cell division cannot be stopped in which phase of the cell cycle?
Options
(a) G₁ phase (b) G₂ phase (c) S phase (d) prophase
Correct Answer:
S phase
Explanation:
No explanation available. Be […]
Which phase comes in between the G₁ and G₂ phase of the cell cycle?
Which phase comes in between the G₁ and G₂ phase of the cell cycle?
Options
(a) M phase (b) G₀ phase (c) S phase (d) interphase
Correct Answer:
S phase
Explanation:
No explanation […]
Which of the following compounds shows evidence of the strongest hydrogen bond
Which of the following compounds shows evidence of the strongest hydrogen bonding
Options
(a) Propan-1-ol (b) Propan-2ol (c) Propane-1,2-diol (d) propane-1,2,3-triol
Correct Answer:
propane-1,2,3-triol
Explanation:
Propane -1,2,3-triol or glycerol has very high boiling […]