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	Matter is defined as any thing which occupies space and:	A. Molecules B. Mass C. Compound D. Molecules
2		A. 8 g B. 16 g C. 32 g D. 24 g
3	The relative abundance of Pb isotopes is 1.5% Pb²⁰⁴, 23.6% Pb²⁰⁶, 22.6% Pb²⁰⁷, 52.3% Pb²⁰⁸The relative atomic mass of Pb is	A. 207.94 B. 208.24 C. 206.94 D. 207.24
4	How many moles of hydrogen atoms does 3.2 g of methane, CH₄, contain?	A. 0.02 B. 0.2 C. 0.4 D. 0.8
5	A compound X contains 50% sulphur and 50% oxygen by mass. What is the empirical formula of compound X?	A. SO B. SO₂ C. SO₃ D. SO₄
6	The branch of science dealing with structure, composition and changes in matter and laws and principles which govern these changes is called as	A. chesmistry B. Geology C. Physics D. Mechanics
7	Each molecule of haemoglobin is 68000 times heavier than one atom of	A. C B. H C. N D. O
8	Hemoglobin is 68000 times heavier than:	A. Oxygen atom B. Nitrogen atom C. Carbon atom D. Hydrogen atom
9	If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required	A. 0.5 B. 1.0 C. 1.5 D. 2.0
10	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	A. 10 cm³ B. 25 cm³ C. 48 cm³ D. 100 cm³

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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

Atoms can be evident by use of electron microscope, field ionization microscope and:

A limiting reactant is the one which

Metal tend to lose electrons, becoming:

Which one of the following step is not involved in determination of empirical formula

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

Matter is defined as any thing which occupies space and:

The amount of products obtained from the balanced chemical equation is regarded as

Which of the following statements is not true?

If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required

Which one of the following statements is not correct

The volume occupied by 1.4 g of N2 at S.T.P is

What is the maximum mass of aluminium which can be obtained from 240g of aluminium oxide Al2O3?

X-ray work has shown that the diameters of atom are of the order of

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

The number of subatomic particles in atoms sidcovered is more than:

0.5 mole of CH4and 0.5 mole of SO2gases have equal

Hemoglobin contains nearly:

One mole of SO2contains

Which statement about an atom is true ?

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

Isotopes differ in the

A molecular ion is formed by

A compound contains 75% carbon and 25% hydrogen, by mass. What is the molecular formula of the compound/

3.01 x 1022Ag+ions is present in

Relative atomic mass of an element is the mass of the element relative to

CL2, N2 and O2 are:

CO+ is an example of

Isotopes differ in

A beaker contains 9 grams of water. The number of H atoms is

Benzene is stable to:

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ECAT Chemistry Chapter 1 Important MCQ's

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The volume occupied by 1.4 g of N₂at S.T.P is

What is the maximum mass of aluminium which can be obtained from 240g of aluminium oxide Al₂O₃?

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

0.5 mole of CH₄and 0.5 mole of SO₂gases have equal

One mole of SO₂contains

3.01 x 10²²Ag⁺ions is present in

CL₂, N₂ and O_{2 are:}