The hydrated salt Na2SO4.nH2O, undergoes 55% loss in  mass on heating and becomes anhydrous. The value of n will be:

1. 5

2. 3

3. 7

4. 10

Subtopic:  Empirical & Molecular Formula |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

12 g of Mg (atomic mass=24) will react completely with an acid to give:

1. one mole of H

2. half mole of H2

3. one mole of O2

4. none of these

Subtopic:  Equation Based Problem |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Find the molality of 15% (w/vol.) solution of H2SO4 of density 1.1g/cm3 :

1. 1.2

2. 1.4

3. 1.8

4. 1.6

Subtopic:  Concentration Based Problem |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Which mode of expressing concentration is independent of temperature?

1. Molality

2. Percent by mass

3. Mole fraction

4. All of these

Subtopic:  Concentration Based Problem |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

The product of atomic mass and specific heat of metal is approximately 6.4. This was given by:

1. Dalton's law

3. Newton's law

4. Dulong Petit's law

Subtopic:  Introduction |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

A metal M forms a compound M2HPO4. The formula of the metal sulfate is:

1. M2SO4

2. MSO4

3. M(SO4${\right)}_{2}$

4. M2(SO4)3

Subtopic:  Equivalent Concept |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

A partially dried clay mineral contains 8% water. The original sample contained 12% water and 45% silica. The% of silica  in the partially dried sample is nearly:

1. 50%

2. 49%

3. 55%

4. 47%

Subtopic:  Concentration Based Problem | Equation Based Problem |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

One litre N2, 7/8 litre O2 and 1 litre CO are taken in a mixture under indentical conditions of P and T. The amount of gases present in mixture is given by:

1. ${\mathrm{\omega }}_{{\mathrm{N}}_{2}}={\mathrm{\omega }}_{{\mathrm{O}}_{2}}>{\mathrm{\omega }}_{\mathrm{CO}}$

2. ${\mathrm{\omega }}_{{\mathrm{N}}_{2}}={\mathrm{\omega }}_{\mathrm{CO}}>{\mathrm{\omega }}_{{\mathrm{O}}_{2}}$

3. ${\mathrm{\omega }}_{{\mathrm{N}}_{2}}={\mathrm{\omega }}_{{\mathrm{O}}_{2}}={\mathrm{\omega }}_{\mathrm{CO}}$

4. ${\mathrm{\omega }}_{\mathrm{CO}}>{\mathrm{\omega }}_{{\mathrm{N}}_{2}}>{\mathrm{\omega }}_{{\mathrm{O}}_{2}}$

Subtopic:  Moles, Atoms & Electrons |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Equal volumes of 0.1 M AgNO3 and 0.2 M NaCl are mixed. The concentration of N${\mathrm{O}}_{3}^{-}$ ions in the mixture will be:

1. 0.1M

2. 0.05M

3. 0.2M

4. 0.15M

Subtopic:  Concentration Based Problem |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

A solution contains Na2CO3 and NaHCO3. 10 mL of the solution required 2.5 mL of 0.1 M H2SO4 for neutralisation using phenolphthalein as indicator. Methyl orange is then added when a further 2.5 mL of 0.2 M H2SO4 was required. The amount of Na2CO3 and NaHCO3 in 1 litre of the solution is:

1. 5.3g and 4.2g

2. 3.3g and 6.2g

3. 4.2g and 5.3g

4. 6.2g and 3.3g

Subtopic:  Equivalent Concept |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: