ECAT Pre Engineering Chemistry Chapter 1 MCQ Test With Answer

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ECAT Chemistry Chapter 1 Important MCQ's

Sr.#	Question	Answer
1	What is the maximum mass of aluminium which can be obtained from 240g of aluminium oxide Al₂O₃?	A. 26 g B. 127 g C. 51 g D. 108 g
2	The amount of products obtained from the balanced chemical equation is regarded as	A. Theoretical yield B. Actual yield C. % yield D. Experimental yield
3	The quantitative relationship between the substances according to balanced equation describes	A. Reversible reactions B. Stoichiometry C. Limiting reacting D. Percentage composition
4		A. N₂O₄is limiting reactant B. N₂H₄is the limiting reactant C. Reactants are completely converted to the products D. Reactions is reversible
5	Hemoglobin contains nearly:	A. 10,000 atoms B. 100 atoms C. 1000 atoms D. 1 atom
6	Formation of a cation is:	A. Exothermic process B. Non-endothermic process C. Endothermic process D. None of above
7	0.5 mole of CH₄and 0.5 mole of SO₂gases have equal	A. Volume B. Mass is gram C. Total number of atoms D. Number of molecules
8	The diameter of atoms is of the order:	A. 2* 10^-5m B. 2* 10^-10m C. 2* 10^-2m D. 2* 10^-3m
9	In molecules kinetic and potential energies are:	A. Definite B. Moderate C. Indefinite D. None of above
10	3.01 x 10²²Ag⁺ions is present in	A. 85 grams AgNO₃ B. 0.85 g AgNO₃ C. 8.5 g AgNO₃ D. 18.5 g AgNO₃

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ECAT Pre Engineering Chemistry Chapter 1 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 1 Basic Concepts

ECAT Chemistry Chapter 1 Basic Concepts

A limiting reactant is one which according to the stoichiometric equation

Macromolecules are

The atom of an element is

A balloon contains 0.02 gram of H2gas, it contains H2molecules

The number of atoms present in molecule determines its:

The atomic mass is measured in atomic mass unit (a.m.u.) which is equal to

When 0.1 g of magnesium is treated with an excess of hydrochloric acid, what volume of gas at room temperature and pressure will be produced

Hemoglobin is 68000 times heavier than:

A ring contains 3 gram diamond. The number of C-atoms which a ring contains is

0.5 mole of CH4and 0.5 mole of SO2gases have equal

In molecules kinetic and potential energies are:

Isotopes differ in

First atomic theory was put forward by an English school teacher:

The value of R(General Gas Constant) is

Each molecule of haemoglobin is 68000 times heavier than one atom of

When an electron is added to a uni positive ion we get:

Benzene is stable to:

Which of the sub-atomic particles is not charged

The mass of one mole of proton is

A limiting reactant is the one which

C6H12O6and C12H22O11 are:

Smallest particle of an element which may or may not have independent existence is known as:

Which one of the following compounds does not have the empirical formula CH2O?

How many moles of hydrogen atoms does 3.2 g of methane, CH4, contain?

The phenomenon of isotropy was first discovered by

Isotopes of an element differ in

The percentage of which element in the organic compound is determined by the difference method

3.01 x 1022Ag+ions is present in

Who one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide?

One mole of ethanol and one mole of ethane have an equal

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A balloon contains 0.02 gram of H₂gas, it contains H₂molecules

0.5 mole of CH₄and 0.5 mole of SO₂gases have equal

C₆H₁₂O₆and C₁₂H₂₂O₁₁ are:

Which one of the following compounds does not have the empirical formula CH₂O?

How many moles of hydrogen atoms does 3.2 g of methane, CH₄, contain?

3.01 x 10²²Ag⁺ions is present in