A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
Anonymous Quiz
27%
-10
43%
-20
19%
-30
11%
None
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The mirror having reflecting surface curved inwards
Anonymous Quiz
56%
Concave mirror
34%
Convex mirror
9%
Plane mirror
1%
None
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The deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called
Anonymous Quiz
16%
Reflection
72%
Refraction
9%
Disappearing
3%
Scattering
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MnO2 + 4HCl → 2 + 2H2O + Cl2
Identify the substance oxidized in the above . equation.
Identify the substance oxidized in the above . equation.
Anonymous Quiz
36%
Mono2
28%
Hcl
30%
H20
7%
Cl2
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A substance added to food containing fats and oils is called:
Anonymous Quiz
22%
Oxidant
38%
Rancid
37%
Antioxidnt
3%
None
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Which one of the following salts does not con-tain water of crystallisation?
Anonymous Quiz
20%
Blue vitrol
44%
Baking soda
23%
Gypsum
13%
Iron oxide
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Tomato is a natural source of which acid?
Anonymous Quiz
18%
Aceticacid
38%
Tartaric acid
26%
Oxalic acid
18%
Citric acid
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How many water molecules does hydrated cal-cium sulphate contain?
Anonymous Quiz
14%
5
37%
10
20%
7
29%
2
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How many water molecules does hydrated cal-cium sulphate contain?
Anonymous Quiz
32%
Bluish pink
39%
Bluish green
17%
Bluis black
12%
Bluish red
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Sodium hydroxide turns phenolphthalein solution
Anonymous Quiz
47%
Pink
23%
Yellow
25%
Colurless
4%
Orange
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The mode of nutrition found in fungi is:
Anonymous Quiz
29%
Parasatic
17%
Holzoic
25%
Autorphic
29%
Sapropythic
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In amoeba, food is digested in the
Anonymous Quiz
42%
Food vacoule
21%
Mitochondria
30%
Pseduopodia
7%
Chloroplast
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