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	Metal tend to lose electrons, becoming:	A. Metals B. Positively charged C. Negatively charged D. (a)And (c)
2	Which of the sub-atomic particles is not charged	A. Electron B. Proton C. Neutron D. All of them
3	The isotopes of an element	A. Possess same mass number B. Possess same number of protons C. Do not possess same chemical properties D. May or may not possess same chemical properties
4	The pressure of vapours when sent to the ionization chamber in mass spectrometer is	A. 10^-5to 10^-6torr B. 10^-6to 10^-7torr C. 10^-7to 10^-8torr D. 10^-3to 10^-4torr
5	The diameter of atoms is of the order:	A. 2* 10^-5m B. 2* 10^-10m C. 2* 10^-2m D. 2* 10^-3m
6	Atoms can be evident by use of electron microscope, field ionization microscope and:	A. x-rays B. Video camera C. Telescope D. Compound microscope
7	A molecular ion is formed by	A. Passing a high energy electron beam through gaseous molecule B. Dissolving a salt i dilute acid C. Passing electric current through molten salt D. Passing electricity through aqueous solutions
8	The atom of an element is	A. The smallest particle B. The fundamental particle C. The independent particle D. The charged particle
9	He Ar and Ne are:	A. Mono-atomic molecules B. Hetero atomic molecules C. Poly-atomic molecules D. Diatomic molecules
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 balloon contains 0.02 gram of H2gas, it contains H2molecules

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

CL2, N2 and O2 are:

The branch of science dealing with structure, composition and changes in matter and laws and principles which govern these changes is called as

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

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

The value of R(General Gas Constant) is

0.5 mole of CH4and 0.5 mole of SO2gases have equal

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

Isotopes differ in the

One of the following statements is incorrect

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

One mole of C2H5OH contains the number of H-atoms

A species having positive or negative charge is called:

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

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

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

Hemoglobin contains nearly:

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

The largest number of molecules are present in

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

Isotopes differ in

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

An ion bearing positive charge is called:

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

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

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

The mass of one mole of proton is

The negatively charged particles are called

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

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ECAT Chemistry Chapter 1 Important MCQ's

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A balloon contains 0.02 gram of H₂gas, it contains H₂molecules

CL₂, N₂ and O_{2 are:}

0.5 mole of CH₄and 0.5 mole of SO₂gases have equal

One mole of C₂H₅OH contains the number of H-atoms

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

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