Chemistry/Chemistry MCQ Questions Set-12 Sample Test,Sample questions

Question:
 as is used as an illuminating gas

1.Methyl

2.Propane

3.Butene

4.Ethyne


Question:
1 Mole of CO2 mass is

1.32 gms

2.44 gms

3.16 gms

4.12 gms


Question:
A feature of catabolic reactions is that they

1.occur only in mitochondria

2.occur only during loss of body weight

3.nvolve release of energy

4.involve consumption of energy


Question:
After cleaning the thermometer should be placed in

1.Sanitizer

2. Ice cold water

3.Mercury

4.None of the above


Question:
Ammonia can be dried by

1.Sulphuric acid

2.Calcium oxide

3.Phosphorus pentoxide

4.Calcium Chloride


Question:
An example of an extensive property of matter is

1.Volume

2.Mass

3.Density

4.All the above


Question:
An ionic bond involves _____.

1.the sharing of a single pair of electrons

2.an attraction between ions of opposite charge

3.the unequal sharing of an electron pair

4.water avoidance


Question:
An ionic bond is formed when 

1.sharing of electrons

2.transfer of electrons

3.Both A & B

4.losing of protons


Question:
Anaerobic glycolysis occurs without

1.water

2.glucose

3.oxygen

4.All of the above


Question:
Bullet proof material is made up of which polymer?

1.Poly carbonates

2.Poly vinyl

3.Poly amides

4.Polychloride


Question:
Butter is colloid formed when

1.Proteins are dispersed in water

2.Water is dispersed in fat

3.Fat globules are dispersed in water

4.Carbohydrates are dissolved in water


Question:
Chlorine gas is used in the manufacture of:

1.Baking powder

2.Bleaching powder

3.Baking soda

4.Washing soda


Question:
Coagulation during water treatment is designed to remove

1. Sand and gravel

2. Bad smells

3.Pathogenic microorganisms

4.Particles suspended in water


Question:
Glycolysis is the conversion of

1.Glucose to pyruvate

2.Glucose to proteins

3.Pyruvate to glucose

4. All the above


Question:
Hydrogen bonds and hydrophilic interactions are

1.Strong chemical bonds that hold together the atoms within a molecule

2.Weak chemical bonds that hold together the atoms within a molecule

3.Strong chemical bonds that link together separate molecules

4.Weak chemical bonds that link together separate molecules


Question:
Isotopes are atoms of the same element that have different

1.numbers of neutrons

2.numbers of electrons

3.numbers of protons

4.atomic numbers


Question:
Methyl alcohol and Ethyl alcohol differ in molecular mass by ........ units.

1.13

2.14

3.12

4.16


Question:
Non-metals are generally more electronegative due to their:

1.large number of electrons

2.smaller atomic radii

3.smaller atomic number

4.smaller ionization energy


Question:
Permanent hardness of water may be removed by the addition of

1.Alum

2.Lime

3.Sodium Carbonate

4.Potassium Permanganate


Question:
PET is a very familiar form of _____________. It is used for making bottles.

1.Nylon

2.Acrylic

3.Polyester

4.Rayon


Question:
Rayon is chemically

1.Glucose

2.Amylase

3.Cellulose

4.Pectin


Question:
Removal of oil and grease from sewage [waste water]

1.Skimming

2.Filtration

3.Screening

4.None of the above


Question:
Stoichiometry is based on

1.Law of conservation of energy

2.Law of conservation of mass

3.Newtons 1st law

4. Keplers law


Question:
The (O-H) bond in CH3OH is _____.

1.polar covalent

2.ionic

3.non polar covalent

4.cationic


Question:
The atomic mass of an element depends upon the

1.number of electrons

2.number of protons

3.number of neutrons

4.All of the above


Question:
The commonly used coolant in refrigerators is

1.Ammonia

2.Nitrogen

3.Freon

4.Oxygen


Question:
The main cause of rancidity in foods is the ____ of fats and oils.

1.hydrolysis

2.clarification

3.reduction

4.oxidation


Question:
The PCl5 molecule has trigonal bipyramidal structure. Thereforethe hybridization of p orbitals should be

1.sp2

2.sp3

3.dsp2

4.dsp3


Question:
Through which conversion is energy released?

1. CO2 and H2O to C6H12O6 and O2

2.NADP+ to NADPH

3.ADP to ATP

4.ATP to ADP


Question:
What is the common characteristic of the elements of the same group in the periodic table?

1.Electrons in outer most shell

2.Total number of electrons

3.Total number of protons

4. Atomic weight


Question:
What unit is used to measure weighted average atomic mass?

1.amu

2.gram/mole

3.Both A & B

4.1/mole


Question:
Which among the following is used in making liquors medicines and as a fuel in aircrafts?

1.Propyl alcoho

2.Dimethyl alcohol

3.Ethyl alcohol

4.Methyl alcohol


Question:
Which among the following will be a negative ion?

1.If it has more electrons than protons

2.If it has more electrons than neutrons

3.If it has more protons than electrons

4. If it has more protons than neutrons


Question:
Which chemical bond most likely stores the most energy?

1.Single bond

2.Double bond

3.Both A & B

4.None of the above


Question:
Which formula represents a polar molecule?

1.C-O

2.C-N

3.H-N

4.All of the above


Question:
Which gas is a source of natural groundwater pollution?

1.Helium

2.Krypton

3.Radon

4.Argon


Question:
Which is the best definition of activation energy?

1.the energy required to break the bonds of reactant molecules

2.the energy required to end a chemical reaction

3.the energy required to bind a substrate to an active site

4.the energy required to re-form bonds in product molecules


Question:
Which kind of energy is stored in a chemical bond?

1.Potential energy

2.Kinetic energy

3.Both A & B

4.None of the above


Question:
Which of the following compounds from nitrites with nitrous acid?

1.Primary amines

2.Secondary amines

3.Tertiary amines

4.All of these


Question:
Which of the following has the lowest melting point?

1.Zinc

2.Silver

3.Lead

4.Tin


Question:
Which of the following is a property of an acid?

1.Acids reacts with metals

2.Acids taste sour

3.Acids turn blue litmus paper red

4.All the above


Question:
Which of the following is a property of sodium hydroxide?

1.It is insoluble in ether and other Non-polar solvents

2.It is slowly soluble in water

3.It has an odor of rotten egg smell

4. All the above


Question:
Which of the following is an Inert Gas?

1.Hydrogen

2.Nitrogen

3.Oxygen

4.Argon


Question:
Which of the following is not an allotrope of carbon?

1.Diamond

2.Graphene

3.Ethylene

4.Buckminsterfullerene


Question:
Which of the following reactions are redox reactions?

1.Ba(s)+Cl2(g)--->BaCl2(s)

2.Mg(s)+Br2(l)--->MgBr2(s)

3.Al(s)+3Ag^+(aq)--->Al^3+(aq)+3Ag(s)

4. All of the above


Question:
Which of the following statements is INCORRECT?

I) Bleaching powder is a pale yellow powder

II) Dry NH3 gas turns red litmus blue

III) The pH of rain water is nearly 7

IV) The pH of acid rain is nearly 5.6

1.I II and IV

2. II and III

3.I and IV

4.Only II


Question:
Which one of the following gases dissolves in water to give acidic solution?

1.Carbon dioxide

2.Oxygen

3.Nitrogen

4.Hydrogen


Question:
Which one of the following statements regarding histone proteins is correct?

1.Histones are proteins that are present in mitochondrial membrane

2.Histones are proteins that are present in nucleus in association with DNA

3.Histones are proteins associated with lipids in the cytosol

4.Histones are proteins associated with carbohydrates in the cytosol


Question:
Which subatomic particle has a positive charge?

1.Proton

2.Neutron

3.Electron

4.Ion


Question:
Who first discovered the every eighth element had properties similar to that of the first?

1.Newlands

2.Moseley

3.Dobereiner

4.Mendeleev


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