Some Basic Concepts of Chemistry Test

Result

Some Basic Concepts of Chemistry Test - 13

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Weekly Quiz Competition

Question 1
4 / -1

5.5 g of a mixture of FeSO₄.7H₂O and Fe₂(SO₄)₃ 9H₂O requires 5.4 mL of 0.1N KMnO₄ solution for complete oxidation. Calculate the number of mole of Fe₂(SO₄)₃9H₂O in the mixture.

A
0.0095

B
0.15

C
0.0952

D
1.52

Solution
Question 2
4 / -1

A
3.865, 7.732

B
7.732, 3.865

C
1.933, 7.732

D
7.732, 1.933

Solution
Question 3
4 / -1

Haemoglobin present in blood contain 3.72% by mass iron. Calculate the number of iron atoms in 2.0 g of haemoglobin.

A
4.53 × 10²⁶

B
4.53 × 10²³

C
5.95 × 10¹⁹

D
8 × 10²⁰
Question 4
4 / -1

The unit J Pa^-1 is equivalent to

A
m³

B
cm³

C
dm³

D
none of these

Solution
Question 5
4 / -1

The density of Al metal is 2.7 gcm^-3. An irregularly shaped piece of aluminium weighing 40.0 g is added to a 100 mL graduated cylinder containing 50.0 mL of water. upto what height the water level will rise in the cylinder ?

A
14.8mL

B
79.6mL

C
64.8mL

D
50mL

Solution
Question 6
4 / -1

Choose the proper option after studying following statement (T = True, F = False)
1. The percent composition of vinyl chloride and its polymer PVC are same.
2. The percent composition of phosphorous trioxide (P₂O₃)is half than that of its dimer phosphorous hexoxide (P₄O₆) for each of the elements present in them.

A
T, F

B
F,T

C
T, T

D
F, F
Question 7
4 / -1

If the atomic mass of carbon were set at 50 amu, what would be the value of Avogadro’s number ?

A
5.01 × 10²⁴

B
6.022 × 10²⁴

C
1.66 × 10²⁴

D
none of these
Question 8
4 / -1

For which of the following compounds molecular weigh cannot be determined from atomic weights ?

A
Fe₄[Fe(CN)₆]

B
TiO₂

C
TiO_1.12

D
none of these
Question 9
4 / -1

Which of the following chemical equation is incorrectly balanced ?

A

B

C

D
Question 10
4 / -1

A
(i) - (q) (ii) - (p) (iii) - (q)

B
(i) - (r) (ii) - (q) (iii) - (p)

C
(i) - (p) (ii) - (q) (iii) - (r)

D
(i) - (p) (ii) - (q) (iii) - (p)