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WorksheetsChemistry Class 12 Test 2
Total questions: 19
Worksheet time: 24mins
Wax is an example of
ionic crystal
covalent crystal
molecular crystal
amorphus crystal
Percentages of free space in cubic close packed structure and in body centered packed structure are respectively
32% and 48%
48% and 26%
30% and 26%
26% and 32%
The number of tetrahedral voids in the unit cell of a face-centred cubic latice of similar atoms is
4
6
8
12
Which kind of defect found in Kcl crystal?
Frenkel
Schottky
Linear
Impurity
Edge length of a cube is 400 pm its body is diagonal would be
500 pm
600 pm
566 pm
693 pm
substance which is weakly repelled by a magnetic feild is
O2
H2O
CrO2
Fe3O4
Which of the following compound is metallic and ferromagnetic?
CrO2
VO2
MnO2
TiO2
What is the mass percentage of carbon tetrachloride if 22 g of benzene in 122 g of carbon tetrachloride?
84.27%
15.28%
50%
44%
What is the molarity of the solution containing 10 g of NaOH in 500ml of solution?
0.25 mol L-1
0.75 mol L-1
0.5 mol L-1
1.25 mol L-1
What will be the molarity of 30 ml of 0.5 M H2SO4 solution diluted to 500 ml?
0.3 M
0.03 M
3 M
0.103 M
What will be the morality of a solution of glucose in water which is 10% w/W?
0.01 M
0.617 M
0.668 M
1.623 M
What is the mole fraction of glucose in 10% w/W glucose solution?
0.01
0.02
0.03
0.04
A solution is obtained by mixing 200g of 30% and 300 g of 20% solution by weight. What is the percentage of solute in the final solution?
50%
28%
64%
24%
The morality of 648 g of pure water is
36 m
55.5 m
3.6 m
5.55 m
How many Na+ ions are present in 100 mL of 0.25 M of NaCl solution?
0.025x1023
1.505x1022
15x1022
2.5x1023
How many grams of NaOH are present in 250 mL of 0.5 M NaOH solution?
7.32g
3.8 g
5g
0.5 g
When 1.04 g of BaCl2 is present in 105 g of solution the concentration of solution is
0.104 ppm
10.4 ppm
0.0104 ppm
27.5 g
What is the mass of urea required for making 2.5 kg of 0.25 molal aqueous solution?
37 g
25 g
125 g
27.5 g
What will be the mole fraction of ethanol in a sample of spirit containing 85% ethanol by mass?
0.69
0.82
0.85
0.60
