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		A. 8 g B. 16 g C. 32 g D. 24 g
2	Benzene is stable to:	A. Oxidation B. Nitration C. KMnO₄ D. SULPHONATION
3	The number of isotopes of gold is	A. 3 B. 1 C. 2 D. 4
4	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
5	One mole of SO₂contains	A. 6.02 x 10²³atoms of oxygen B. 18.1 x 10²³, molecules of SO₂ C. 6.02 x 10²³atoms of sulphur D. 4 gram atoms of SO₂
6	The empirical formula of a compound is CH₂O. What may be the compound	A. C₂H₅OH B. C₆H₅OH C. HCOOH
7	Isotopes differ in the	A. Number of neutrons B. Number of protons C. Number of electrons D. Number of atoms
8	The relative abundance of the ions with a definite m/e value is measured by	A. High pressure of vapours B. Strength of electric current measured C. Quantity of fast moving electrons D. Electron gas
9	One mole of ethanol and one mole of ethane have an equal	A. Mass B. Number of atoms C. Number of electrons D. Number of molecules
10	The atom of an element is	A. The smallest particle B. The fundamental particle C. The independent particle D. The charged particle

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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

Which of the following statement is correct for a chemical reaction to occur molecules of substances must

Ascorbic acid contains 40.92% carbon, 4.58%, hydrogen and 54.4% oxygen. The empirical formula is

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

The pressure of vapours when sent to the ionization chamber in mass spectrometer is

A molecule of haemoglobin is made up if nearly

Which of the sub-atomic particles is not charged

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

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

Metal tend to lose electrons, becoming:

A balloon contains 0.02 gram of H2gas, it contains H2molecules

One mole of C2H5OH contains the number of H-atoms

The percentage of H is the highest in

The atom of an element is

Covalent compound s mostly exist in the form of:

Where energy is released during a reaction it is

The value of R(General Gas Constant) is

The wave length of visible light is 500 nm. In S.I. unit this value is

The number of isotopes of gold is

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

Hemoglobin is 68000 times heavier than:

Mass spectrometer measures the

Which statement about an atom is true ?

Macromolecules are

A limiting reactant is one which according to the stoichiometric equation

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

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

Which statement about molecule is incorrect ?

Formation of a cation is:

How many moles of oxygen, O2are needed for the complete combustion of two moles of butane C4H10?

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

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

ECAT Chemistry Chapter 1 Important MCQ's

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

A balloon contains 0.02 gram of H₂gas, it contains H₂molecules

One mole of C₂H₅OH contains the number of H-atoms

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

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

How many moles of oxygen, O₂are needed for the complete combustion of two moles of butane C₄H₁₀?

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