In preparation of iron from haematite (Fe2O3)by the reaction with carbon
                          Fe2O3 + C  Fe + CO2
How much 80% pure iron could be produced from 120 kg of 90% pure Fe2O3 ?

1. 94.5 kg

2. 60.48 kg

3. 116.66 kg

4. 120 kg

Subtopic:  Equation Based Problem |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A gaseous mixture of H2 and CO2 gas contains 66 mass % of CO2. The vapour density of the mixture is:

1.  6.1

2.  5.4

3.  2.7

4.  10.8

Subtopic:  Equation Based Problem |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

What volume of 75% alcohol by weight (d=0.80g/cm3) must be used to prepare 150 cm3 of 30% alcohol by weight (d=0.90 g/cm3)?

1. 67.5 mL

2. 56.25 mL

3. 44.44 mL

4. None of these

Subtopic:  Concentration Based Problem |
 57%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Average atomic mass of magnesium is 24.31 a.m.u. This magnesium is compound of 79 mole% of Mg24 and remaining 21 mole % of Mg25 and Mg26. Calculate mole% of Mg26.

1.  10

2.  11

3.  15

4.  16

Subtopic:  Moles, Atoms & Electrons |
 59%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A mixture of NH4NO3 and (NH4)2HPO4 contain 30.40% mass per cent of nitrogen. What is the mass ratio of the two components in the mixture?

1. 2 : 1

2. 1 : 2

3. 3 : 4

4. 4 : 1

Subtopic:  Equation Based Problem |
 51%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A mixture of O2 and gas "Y" (mol. wt. 80) in the mole ratio a : b has a mean molecular weight 40. What would be mean molecular weight, if the gases are mixed in the ratio b : a under identical conditions? (gases are non-reacting):

1.  40

2.  48

3.  62

4.  72

Subtopic:  Moles, Atoms & Electrons | Equation Based Problem |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

 If 2.74 g of the metal oxide contains 1.53 g of metal, then the empirical formula of vanadium oxide is:

(Atomic Mass of V = 52)

1. V2O3

2. VO

3. V2O5

4. V2O7

Subtopic:  Empirical & Molecular Formula |
 59%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A gaseous mixture of propane and butane of volume 3 litre on complete combustion produces 11.0 litre CO2 under standard conditions of temperature and pressure. The ratio of volume of butane to propane is:

1. 1 : 2

2. 2 : 1

3. 3 : 2

4. 3 : 1

Subtopic:  Equation Based Problem |
 64%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The percentage by volume of C3H8 in a gaseous mixture of C3H8CH4 and CO is 20. When 100 mL of the mixture is burnt in excess of O2, the volume of CO2 produced is

1. 90 mL

2. 160 mL

3. 140 mL

4. None of these

Subtopic:  Equation Based Problem |
 56%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The percentage of oxygen present in the compound CaCO3.3Ca3 PO42 is-

1.  23.3%

2.  45.36%

3.  41.94%

4.  17.08%

Subtopic:  Moles, Atoms & Electrons |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh