NCERT Exemplar (Objective) Based MCQs Some Basic Concepts Of Chemistry Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Two students performed the same experiment separately, and each of them recorded two readings of mass, which are given below. The correct reading of mass is 3.0 g. On the basis of the given data, mark the correct option out of the following statements.

Students	Readings
	(i)	(ii)
A	3.01	2.99
B	3.05	2.95

1.	The results of both the students' are neither accurate nor precise.
2.	The results of student A are both precise and accurate.
3.	Student B's results are neither precise nor accurate.
4.	The results of student B are both precise and accurate.

Subtopic: Introduction |

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A reading on Fahrenheit scale is $200 ° F$ . The same reading on celsius scale will be :
1. 40°C
2. 94°C
3. 93°C
4. 30°C

Subtopic: Introduction |

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The molarity of a solution containing 5.85 g of NaCl(s) per 500 mL of solution is:

1. 4 mol L^–1

2. 20 mol L^–1

3. 0.2 mol L^–1

4. 2 mol L^–1

Subtopic: Concentration Based Problem |

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If 500 mL of a 5 M solution is diluted to 1500 mL, the molarity of the resultant solution is:

1. 1.5 M

2. 1.66 M

3. 0.017 M

4. 1.59 M

Subtopic: Concentration Based Problem |

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Mark the species among the following that contains the highest number of atoms:

1. 4 g He

2. 46 g Na

3. 0.40 g Ca

4. 12 g He

Subtopic: Moles, Atoms & Electrons |

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If the concentration of glucose (C₆H₁₂O₆) in the blood is 0.9 g L^–1, then the molarity of glucose in the blood is:
1. 5 M
2. 50 M
3. 0.005 M
4. 0.05 M

Subtopic: Concentration Based Problem |

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The molality of a solution containing 18.25 g of HCl gas in 500 g of water is -

1.	0.1 m	2.	1 M
3.	0.5 m	4.	1 m

Subtopic: Concentration Based Problem |

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The number of molecules of H₂SO₄ present in 100 mL of 0.02 M H₂SO₄ solution are:

1. $12.044 \times 10^{20}$ molecules

2. $6.022 \times 10^{23}$ molecules

3. $1 \times 10^{23}$ molecules

4. $12.044 \times 10^{23}$ molecules

Subtopic: Concentration Based Problem |

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The mass percent of carbon in carbon dioxide is:

1.	0.034%	2.	27.27%
3.	3.4%	4.	28.7%

Subtopic: Concentration Based Problem |

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The empirical formula and molecular mass of a compound are ${CH}_{2} O$ and 180 g, respectively. The molecular formula of the compound is:
1. C₉H₁₈O₉
2. CH₂O
3. C₆H₁₂O₆
4. C₂H₄O₂

Subtopic: Empirical & Molecular Formula |

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Select Chapter Topics:

Introduction

Moles, Atoms & Electrons

Empirical & Molecular Formula

Limiting Reagent

Equation Based Problem

Concentration Based Problem

Millimole/Equivalent Concept

Select Chapter Topics:

Introduction

Moles, Atoms & Electrons

Empirical & Molecular Formula

Limiting Reagent

Equation Based Problem

Concentration Based Problem

Millimole/Equivalent Concept

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Select Chapter Topics:

Introduction

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Limiting Reagent

Equation Based Problem

Concentration Based Problem

Millimole/Equivalent Concept

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Select Chapter Topics:

Introduction

Moles, Atoms & Electrons

Empirical & Molecular Formula

Limiting Reagent

Equation Based Problem

Concentration Based Problem

Millimole/Equivalent Concept

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Botany Questions

Chemistry Questions

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