Q5:- pigment absent in
Anonymous Quiz
23%
a) notrosomones
25%
b) Anabena
22%
c) purple sulfur bacteria
31%
d) all
❤7🔥3
Q1:-Which of the following concentration determine techniques gives a more accurate value?
Anonymous Quiz
35%
a) Molarity
36%
b) Molality
13%
c) Formality
16%
d) Normality
❤12🔥9
Q2:-What is the molality of a solution formed when 58.5g of NaCl is dissolved in 2000 mL of water?
Anonymous Quiz
17%
a) 29.2500 m
43%
b) 0.5000 m
27%
c) 0.0005 m
12%
d) 0.2925 m
❤6🔥5
Q3:-What is a solution called when the concentration of the solute equals its solubility in the solvent?
Anonymous Quiz
19%
a) Dilute
25%
b) Supersaturated
15%
c) Unsaturated
41%
d) Saturated
🔥10❤3
Q4:-What does the unit ‘mmole/kg’ represent?
Anonymous Quiz
39%
a) Molality
24%
b) Molarity
23%
c) Molar mass
13%
d) Milli-molarity
🔥13❤3
Q5:-What is the molarity of 20% (w/v) H2SO4 solution?
Anonymous Quiz
19%
a) 0.51 M
35%
b) 1.02 M
24%
c) 4.08 M
22%
d) 2.04 M
🔥12
Q1:-Gaseous exchange is held by ________
Anonymous Quiz
22%
a) osmosis
59%
b) simple diffusion
14%
c) facilitated diffusion
5%
d) co-transport
❤24🔥5
Q2:-Carbon dioxide is _______ times more soluble than oxygen.
Anonymous Quiz
46%
a) 20-25
25%
b) 5-10
21%
c) 15-20
7%
d) 25-30
❤11🔥3
Q3:- On which of the following factors diffusion does not depend?
Anonymous Quiz
13%
a) Solubility of gases
30%
b) Thickness of the respiratory membrane
14%
c) Partial pressure difference
44%
d) Molecular weight of gases
❤7🔥5
Q4:-Partial pressure of oxygen in alveolar air is ________
Anonymous Quiz
16%
a) 159 mm Hg
30%
b) 90 mm Hg
46%
c) 104 mm Hg
8%
d) 45 mm Hg
❤10🔥4
Q5:-What is the primary site for exchange of gases in lungs?
Anonymous Quiz
10%
a) Larynx
70%
b) Alveoli
13%
c) Trachea
7%
d) Bronchi
❤9🔥2
Q1:-The increasing order of the atomic radii of elements Na, Rb, K, Mg is
Anonymous Quiz
23%
(a) Na < K < Mg < Rb
20%
(b) K < Na < Mg < Rb
31%
(c) Na < Mg < K < Rb
26%
(d) Mg < Na < K < Rb
❤16🔥10
Q2:-Which of the following sets does not belong to a group?
Anonymous Quiz
10%
(a) Li, Na, K
60%
(b) B, C, N
18%
(c) B, Al, Ga
12%
(d) O, S, Se
🔥14
Q3:-Arrange the following elements into the increasing order of their metallic character along a period.
Anonymous Quiz
12%
(a) S < Si < P < Al
50%
(b) S < P < Si < Al
28%
(c) Si < P < S < Al
10%
(d) Si < S < P < Al
🔥14❤3
Q4:-Which is not true about noble gases?
Anonymous Quiz
17%
(a) They are non-metallic in nature
22%
(b) They exist in atomic form
37%
(c) They are radioactive in nature
24%
(d) Xenon is the most reactive among these
🔥13
Q5:-Identify the group which is not a Döbereiner triad
Anonymous Quiz
16%
(a) Li, Na, K
24%
(b) Cl, Br, I
27%
(c) Ca, Sr, Ba
32%
(d) Be, Mg, Cr
❤24🔥13
Q1:-Enzymes increase the rate of reaction by
Anonymous Quiz
40%
(a) lowering activation energy
33%
(b) increasing activation energy
21%
(c) increasing temperature and pH
6%
(d) decreasing temperature and pH
🔥16❤3