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 limiting reactant is one which according to the stoichiometric equation	A. Has excess mass B. Has least mass C. Has excess number of moles D. Has least number of moles
2	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
3	A molecule of haemoglobin is made up if nearly	A. 10,000 atoms B. 50,000 atoms C. 2500 atoms D. 1500 atoms
4	Ascorbic acid contains 40.92% carbon, 4.58%, hydrogen and 54.4% oxygen. The empirical formula is	A. C₃H₄O₃ B. C₂H₄O₃ C. C₃H₅O₄ D. C₂H₃O₁
5
6	First atomic theory was put forward by an English school teacher:	A. Maxewell B. Newton C. Sanger D. John Dalton
7	The quantitative relationship between the substances according to balanced equation describes	A. Reversible reactions B. Stoichiometry C. Limiting reacting D. Percentage composition
8	The number of atoms present in molecule determines its:	A. Molecularity B. Atomicity C. Basicity D. Acidity
9	The atomic mass is measured in atomic mass unit (a.m.u.) which is equal to	A. 1.661 x 10^{-27- Kg} B. 1.661 x 10^-24Kg C. 1.661 x 10^{-27- g} D. 1.661 x 10^-24mg
10		A. N₂O₄is limiting reactant B. N₂H₄is the limiting reactant C. Reactants are completely converted to the products D. Reactions is reversible

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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

The relative atomic mass of chlorine is 35.5. What is the mass of 2 mol of chlorine gas

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

Objects of the size of an atom can be observed in

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

One of the following statements is incorrect

Benzene is stable to:

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

The largest number of molecules are present in

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

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

CO+ is an example of

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

Hemoglobin contains nearly:

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

The number of moles of CO2which contain 8.0 g of oxygen

Which statement about an atom is true ?

The atom of an element is

Covalent compound s mostly exist in the form of:

A limiting reactant is one which according to the stoichiometric equation

Where energy is released during a reaction it is

The diameter of atoms is of the order:

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

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

In molecules kinetic and potential energies are:

Formation of a cation is:

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

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

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

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

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

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ECAT Chemistry Chapter 1 Important MCQ's

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