ECAT Pre Engineering Chemistry Chapter 1 MCQ Test With Answer

Top Scorers Of ECAT Chemistry Chapter 1 Basic Concepts MCQ`s Test

F

Fatima Tabassum 09 - Jan - 2025 04 Min 47 Sec 100/120
Z

zakee 09u 28 - Nov - 2024 18 Min 56 Sec 95/120
H

habib rehman 17 - Apr - 2026 24 Min 01 Sec 92/120
A

Aroosha Tariq 13 - Nov - 2024 06 Min 02 Sec 90/120
Z

Zainab Tanvir 07 - Dec - 2025 09 Min 10 Sec 80/120
I

ISI?Shadow 16 - Nov - 2024 17 Min 47 Sec 80/120
N

notghouri playz 13 - Dec - 2024 27 Min 04 Sec 80/120
T

Tayyaba Attique 16 - Nov - 2024 07 Min 22 Sec 75/120
U

umerasif 14 - Nov - 2024 105 Min 42 Sec 75/120
M

Muhammad Zain 25 - Apr - 2026 09 Min 22 Sec 72/120
A

agha hamza 22 - Nov - 2025 22 Min 17 Sec 72/120
A

abdullah masood 04 - Dec - 2024 10 Min 54 Sec 70/120
M

Muhammad Awais 01 - Jan - 2025 05 Min 43 Sec 65/120
A

Aqsa afridi 02 - Dec - 2024 24 Min 01 Sec 65/120
A

afraz afraz 17 - Jan - 2025 00 Min 39 Sec 60/120

ECAT Chemistry Chapter 1 Important MCQ's

Sr.#	Question	Answer
1	The mass of Al₂S₃formed when 20 grams Al reacts completely with S is	A. 60 g B. 50 g C. 50.55 g D. 55.55 g
2	Atoms can be evident by use of electron microscope, field ionization microscope and:	A. x-rays B. Video camera C. Telescope D. Compound microscope
3	Which of the following statement is correct for a chemical reaction to occur molecules of substances must	A. Collide with each other B. Collide with energy more than activation energy C. Collide with energy less than activation energy D. Collide with high frequency
4		A. 32 g B. 3.2 g C. 5.6 g D. 9.6 g
5	One mole of C₂H₅OH contains the number of H-atoms	A. 6.02 x 10²³ B. 3.61 x 10²⁴ C. 1.81 x 10²⁴ D. 6.02 x 10²⁴
6		A. 84.84 % B. 89.89% C. 81.81% D. 90.90%
7	Who one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide?	A. Carbon monoxide B. Diamond C. Ethane D. Methane
8	A compound contains 75% carbon and 25% hydrogen, by mass. What is the molecular formula of the compound/	A. C₃H₈ B. CH₄ C. C₂H₄ D. C₂H₆
9	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
10	The number of subatomic particles in atoms sidcovered is more than:	A. 110 B. 100 C. 125 D. 90

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

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

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

The relative abundance of the ions with a definite m/e value is measured by

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

A molecule of haemoglobin is made up if nearly

An ion bearing positive charge is called:

The diameter of atoms is of the order:

Matter is defined as any thing which occupies space and:

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

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

Isotopes of an element differ in

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

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

Which of the following statements is not true?

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

A compound X contains 50% sulphur and 50% oxygen by mass. What is the empirical formula of compound X?

Isotopes differ in

The isotopes of an element

Atoms and molecules can either gain or lose electrons, forming charge particles called:

Which of the sub-atomic particles is not charged

A species having positive or negative charge is called:

The value of R(General Gas Constant) is

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

In molecules kinetic and potential energies are:

Isotopes differ in the

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

The empirical formula of a liquid compound is known to be C2H4O. What other information is needed to work out its molecular formula?

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

A compound contains one atom of oxygen and % of O 34.78, then molecular mass of compound is

Which has greater number of moles

A limiting reactant is the one which

Prepare Complete Set Wise ECAT Chemistry Chapter 1 Basic Concepts MCQs Online With Answers

Set 1

Set 2

Set 3

Set 4

Topic Test

Top Scorers Of ECAT Chemistry Chapter 1 Basic Concepts MCQ`s Test

ECAT Chemistry Chapter 1 Important MCQ's

Test Questions

Is this page helpful?

Share your comments & questions here

ishaq

ishaq

Mehwish

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?

The empirical formula of a liquid compound is known to be C₂H₄O. What other information is needed to work out its molecular formula?