What is the percentage of the oxygen in the expired air when a person is resting?
Anonymous Quiz
26%
12
34%
16
20%
24
20%
32
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Work of 14 J is done to move 2 C charge between two points on a conducting wire. What is the potential difference between the two points?
Anonymous Quiz
39%
28v
37%
14v
24%
7v
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A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is
Anonymous Quiz
29%
10a
36%
20a
24%
30a
11%
40a
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The most abundant metal in the earthโs crust is
Anonymous Quiz
47%
Iron
36%
Aluminium
10%
Calcium
8%
None
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The poorest conductor of heat among metals is
Anonymous Quiz
46%
Lead
30%
Mercury
18%
Sodium
6%
Iron
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The highest coordinating centre in the human body is
Anonymous Quiz
41%
Spinal cord
25%
Heart
10%
Kidney
24%
Brain
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Which part of nervous system controls the reยฌflex activities of the body
Anonymous Quiz
23%
Brain
43%
Spinal cord
26%
Cerebellum
8%
Medulla
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Which of the following acts as both endocrine and exocrine gland?
Anonymous Quiz
44%
Pancreas
34%
Throyid
17%
Liver
5%
None
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MnO2 + 4HCl โ 2 + 2H2O + Cl2
Identify the substance oxidized in the above . equation.
Identify the substance oxidized in the above . equation.
Anonymous Quiz
44%
MnO2
35%
Hcl
21%
H20
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What type of chemical reactions take place when electricity is passed through water?
Anonymous Quiz
29%
Displacement
45%
Decomposition
11%
Combination
15%
Alll
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