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Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 9th Standard Science - English Medium - Solutions
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Samacheer Kalvi 9th Science - Solutions - Book Back Questions in English Medium
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Question 1 Of 10
Which of the following is hygroscopic in nature?
ferric chloride
copper sulphate pentahydrate
silica gel
of the above
Question 2 Of 10
Deliquescence is due to.
Strong affinity to water
Less affinity to water
Strong hatred to water
tness to water
Question 3 Of 10
When pressure is increased at constant temperature the solubility of gases in liquid.
No change
increases
decreases
eaction
Question 4 Of 10
A solution in which no more solute can be dissolved in a definite amount of solvent at a given temperature is called.
Saturated solution
Unsaturated solution
Supersaturated solution
te solution
Question 5 Of 10
Which of the following is the universal solvent?
Acetone
Benzene
Water
hol
Question 6 Of 10
A solution is a mixture.
homogeneous
heterogeneous
homogeneous and heterogeneous
homogeneous
Question 7 Of 10
A 25% alcohol solution means;
25 ml alcohol in 100 ml of water
25 ml alcohol in 25 ml of water
25 ml alcohol in 75 ml of water
l alcohol in 25 ml of water
Question 8 Of 10
The number of components in a binary solution is.
2
3
4
5
Question 9 Of 10
Solubility of NaCl in 100 ml water is 36 g. If 25 g of salt is dissolved in 100 ml of water how much more salt is required for saturation.
12g
11g (36–25)
16g
20g
Question 10 Of 10
Identify the non-aqueous solution.
sodium chloride in water
glucose in water
copper sulphate in water
hur in carbon–di–sulphide
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