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	The mass of one mole of proton is	A. 1.008 g B. 0.184 g C. 1.673 g D. 1.008 mg
2	The atom of an element is	A. The smallest particle B. The fundamental particle C. The independent particle D. The charged particle
3	The largest number of molecules are present in	A. 3.6 g of H₂O B. 4.8 g of C₂H₅OH C. 2.8 g of CO D. 5.4 g of N₂O₅
4	Hemoglobin contains nearly:	A. 10,000 atoms B. 100 atoms C. 1000 atoms D. 1 atom
5	Which of the following compounds contains the highest percentage by mass of nitrogen?	A. Ammonia, NH₃ B. Ammonium carbamate, NH₂CO₂NH₄ C. Ammonium carbonate, (NH₄)₂CO₃ D. Hydrazine, N₂H₄
6		A. 99.2% B. 99.5% C. 90.5% D. 96.2%
7	1.12 dm³of N₂gas at S.T.P. has mass of N₂gas	A. 2.8 g B. 2.4 g C. 1.4 g D. 14 g
8		A. 8 g B. 16 g C. 32 g D. 24 g
9	Benzene is stable to:	A. Oxidation B. Nitration C. KMnO₄ D. SULPHONATION
10		A. 32 g B. 3.2 g C. 5.6 g D. 9.6 g

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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 compound having empirical formula C3H3O and its molecular mass is 110.02. Its molecular formula is

In molecules kinetic and potential energies are:

A molecular ion is formed by

Two different hydrocarbon each contain the same percentage by mass of hydrogen. It follows that they have the same

One of the following statements is incorrect

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

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

Which of the sub-atomic particles is not charged

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

The diameter of atoms is of the order:

Macromolecules are

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

Which statement about molecule is incorrect ?

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

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

An ion bearing positive charge is called:

Which of the following compounds contains the highest percentage by mass of nitrogen?

He Ar and Ne are:

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

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

Mass spectrometer measures the

The number of atoms present in molecule determines its:

A molecule of haemoglobin is made up if nearly

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

Isotopes differ in the

Matter is defined as any thing which occupies space and:

The phenomenon of isotropy was first discovered by

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

Which has greater number of moles

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

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A compound having empirical formula C₃H₃O and its molecular mass is 110.02. Its molecular formula is

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?