The mass of CO_{2} produced by heating 20 g of 20% pure limestone as per the given below equation is:

\(\left[\mathrm{CaCO}_3 \stackrel{1200 \mathrm{~K}}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_2\right] \)

\(\left[\mathrm{CaCO}_3 \stackrel{1200 \mathrm{~K}}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_2\right] \)

1. | 1.32 g | 2. | 1.12 g |

3. | 1.76 g | 4. | 2.64 g |

Subtopic: Equation Based Problem |

72%

From NCERT

NEET - 2023

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Calculate the mass of 95% pure CaCO_{3} that will be required to neutralize 50 mL of 0.5 M HCl solution according to the following reaction.

CaCO_{3(s)} + 2HCl_{(aq)} → CaCl_{2(aq)} + CO_{2(g)} + 2H_{2}O_{(l)}

[Calculate up to the second place of decimal point]

CaCO

[Calculate up to the second place of decimal point]

1. | 9.50 g | 2. | 1.25 g |

3. | 1.32 g | 4. | 3.65 g |

Subtopic: Equation Based Problem |

53%

From NCERT

NEET - 2022

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To produce 20 moles of ammonia via Haber's process, how many moles of hydrogen molecules are required?

1. | 40 mol | 2. | 10 mol |

3. | 20 mol | 4. | 30 mol |

Subtopic: Limiting Reagent | Equation Based Problem |

80%

From NCERT

NEET - 2019

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Suppose the elements X and Y combine to form two compounds XY_{2} and X_{3}Y_{2}. If 0.1 mole of XY_{2 }weighs 10 g and 0.05 mole of X_{3}Y_{2} weighs 9 g, the atomic weight of X and Y respectively, will be:

1. | 40, 30 | 2. | 60, 40 |

3. | 20, 30 | 4. | 30, 20 |

Subtopic: Equation Based Problem |

77%

From NCERT

NEET - 2016

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What is the mass of precipitate formed when 50 mL of 16.9% solution of AgNO_{3} is mixed with 50 mL of 5.8% NaCl solution? (Ag = 107.8, N = 14, O = 16, Na= 23, Cl = 35.5)

1. 28 g

2. 3.5 g

3. 7 g

4. 14 g

Subtopic: Equation Based Problem |

54%

From NCERT

NEET - 2015

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The volume of oxygen gas (O_{2}) needed to completely burn 1 L of propane gas (C_{3}H_{8}) (both O_{2 }& propane measured at 0°C and 1 atm) will be:

1. 7 L

2. 6 L

3. 5 L

4. 10 L

Subtopic: Equation Based Problem |

77%

From NCERT

AIPMT - 2008

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The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminum metal from bauxite by the Hall process is:

1. 90 kg

2. 540 kg

3. 180 kg

4. 270 kg

(Atomic mass : Al = 27)

Subtopic: Equation Based Problem |

From NCERT

AIPMT - 2005

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The volume of CO_{2} obtained by the complete decomposition of 9.85 grams of BaCO3 is:

1. 2.24 lit.

2. 1.12 lit.

3. 0.84 lit.

4. 0.56 lit

Subtopic: Equation Based Problem |

69%

From NCERT

AIPMT - 2000

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0.33% of iron (by weight) is present in hemoglobin (Molecular wt = 67200).

The number of iron atom(s) in one molecule will be:

1. 1

2. 2

3. 3

4. 4

Subtopic: Equation Based Problem |

71%

From NCERT

AIPMT - 1998

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