MDCAT | MBBS|BDS|CHEMISTRY 2008 PAST PAPER

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THIS ONLINE QUIZ IS ABOUT THE CHEMISTRY PART OF PAST MDCAT PAPER 2008 .THIS SHORT TEST CONSIST OF 60 QUESTIONS

CHEMISTRY 2008

Which type of bonding is present in NH4Cl?

5 points

IONIC

COVALENT

COORDINATE COVALENT

ALL OF THESE

Clear selection

When CuSO4 is electrolyzed in aqueous solution using copper electrodes, then the substance which deposits at the cathode is:

5 points

COPPER METAL

COPPER ION

HYDROGEN

OXYGEN

Clear selection

Aldehydes can be synthesized by the oxidation of

5 points

PRIMARY ALCOHOL

SECONDARY ALCOHOL

ORGANIC ACID

INORGANIC ACIDS

Clear selection

The products of the fermentation of sugar are ethanol and

5 points

WATER

OXYGEN

CARBONDIOXIDE

SULPHUR

Clear selection

__________serve as carriers of heredity from one generation to the other.

5 points

LIPIDS

CASIENS

FARMALDEHYDE

NUCLEOPROTEIN

Clear selection

__________extraction is controlled by partition law.

5 points

IODINE

BENZOIC ACID

SOLVENT

STATIONARY

Clear selection

The process of effusion is best understood by __________law.

5 points

GRAHAM,S

CHARLE,S

BOYLE,S

NONE OF THEM

Clear selection

__________has dipole moment

5 points

CO2

BENZENE

ALL OF THESE

Clear selection

__________is used as catalyst in Haber’s process for NH3 gas manufacture.

5 points

IRON

CARBON

COPPER

SILVER

Clear selection

In many of its properties__________is quite different from the other alkali metals

5 points

Clear selection

Which element forms long chains alternating with oxygen?

5 points

CARBON

SILICON

NITROGEN

ALL OF THESE

Clear selection

The percentage of carbon in medium carbon steel is

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0.7-____1.5

0.1-0.2. D

0.2-0.7.

1.6-2.00.

Clear selection

Name the rare halogen among the following.

5 points

Clear selection

Which bond will break when electrophile attacks alcohol?

5 points

O_______H

C__O

BOTH A &B

NONE OF THESE

Clear selection

The extent of un-saturation in fat is expressed as its

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ACID NUMBER

IODINE NUMBER

SPONIFICATION NO

NONE OF THESE

Clear selection

The process of filtration is used to separate__________ particles from liquids.

5 points

RADIAL

ANGULAR

INSOLUBLE

SOLUBLE

Clear selection

London forces are very significant in

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SULPHUR

PHOSPHORUS

ARGON

SUGAR

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Which of the following form is an endothermic reaction?

5 points

2H2(g) + O2(g) ________________>>2H2O(l).

C(s) + O2(g)____________________>> CO2(g).

N2(g) + O2(g)______________________>> N2O2(g).

NONE OF THESE

Clear selection

Name the partially miscible liquids from the following?

5 points

ALCOHOL-ETHER

NICOTINE- WATER

BENZENE -WATER

BOTH A& B

Clear selection

AlI3 (Aluminium Iodide) is electrically a

5 points

CONDUCTER

NON-CONDUCTER

SEMICONDUCTER

NONE OF THESE

Clear selection

The elements of IIIA to VIIIA subgroups except He are known as__________blockelements.

5 points

NONE OF THESE

Clear selection

Concentrated nitric acid gives__________when it reacts with tin.

5 points

NITRIC OXIDE

METASTTANIC ACID

AMMONIUM NITRATE

NONE OF THESE

Clear selection

Sulphuric acid is used to manufacture

5 points

HCl AND HNO3

H3PO4

BOTH A & B

BOTH HCl AND 2COOH

Clear selection

Alkanes containing __________carbon atoms are waxy solids.

5 points

UPTO 4

5_________17

18 OR MORE

NONE OF THESE

Clear selection

Which of the following is used to make chloral hydrate? *

5 points

ACETALDEHYDE

FORMALDEHYDE

NONE OF THESE

BOTH A& B

Ten moles of hydrogen is allowed to react with 6 moles of oxygen. How much water will be obtained from the reaction on complete consumption of one gas?

5 points

10 mole

8mole

6mole

4mole

Clear selection

The highest temperature a substance can exist as__________is called its critical temperature.

5 points

SOLID

LIQUID

GAS

ISOTOPE

Clear selection

__________________ hybridization leads to a regular tetrahedral structure.

5 points

SP3

SP2

ALL OF THESE

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Osmotic pressure of a solution is__________ property. *

5 points

OBLIGATIVE

FRACTIONAL

COLLIGATIVE

NONE OF THESE

Magnesium reacts with hydrogen at high pressure in the presence of catalyst__________forming magnesium hydride.

5 points

DOLOMITE

MgI2

Mg3 N2

EPSOM SALT

Clear selection

Which element has the largest number of allotropic forms?

5 points

A&C

Clear selection

With the increase in a number of unpaired electrons, paramagnetism:

5 points

INCREASES

DECREASES

REMAINS CONSTANT

DECREASES THEN INCREASES

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Which metal is commonly used to remove air bubbles from molten metals?

5 points

ALUMINIUM

COPPER

SODIUM

CALCIUM

Clear selection

Which of the following bonds has minimum bond energy?

5 points

C_F

C_Cl

C_I

C_Br

Clear selection

Which of the following does not react with water?

5 points

Clear selection

Al2O3(SiO2).2H2O is called

5 points

CLAY

TALC

ASBESTOS

NONE OF THESE

Clear selection

Cao forms fertilize slag by reacting with

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P2O5

Fe2O3

SILICA

Clear selection

is colourless volatile liquid at room temperature.

5 points

HCl

HBr

Clear selection

Hydrogen passed through phenol at 150 ºC in the presence of__________catalyst givescyclohexanol.

5 points

TIN

NICKLE

IRON

SODIUM

Clear selection

Ethanol-water is__________mixture.

5 points

AZEOTROPHIC

IDEAL

BENEDICT,S

ALIPHATIC

Clear selection

The mobile phase in paper chromatography is usually

5 points

AN ORGANIC LIQUID

SULPHURIC ACID

WATER

SILVER NITRATE

Clear selection

The amount of heat absorbed by one mole of solid at 1 atm when it melts into liquid form is denoted by __________

5 points

∆ Hv.

∆ Hf

∆ Hi.

∆ Hs.

Clear selection

In synthetic fibres__________bonding is responsible for tensile strength.

5 points

NITROGEN

OXYGEN

HYDROGEN

NONE OF THESE

Clear selection

The boiling point of HF is__________H2O.

5 points

LOWER THAN

HIGHER THAN

EQUAL TO

ALMOST SAME AS

Clear selection

is necessary for the development of leaves and it tends to accumulate in leaves and bark.

5 points

NO2

GYPSUM

NITROGEN

Clear selection

Which of the following is pale yellow to reddish yellow in colour?

5 points

Pb2O

PbO2

PbO

2PbCO3.Pb(OH)2

Clear selection

In which of the following carbon is double bonded with itself?

5 points

ALKANE

ETHER

ALKENE

ALKYNE

Clear selection

In this process, higher hydrocarbons can be cracked at lower temperature and lower pressure.

5 points

THERMAL CRACKING

CATLYTIC CRACKING

STEAM CRACKING

REFORMING

Clear selection

Acetic acid is called__________acid. *

5 points

METHANOIC

PROPANOIC

ETHANOIC

BUTANOIC

Na may be denoted by __________electron configuration notation *

5 points

1S2, 2S1

[Ar]4S1

[Ne] 3S1

NONE OF THESE

Which is the best drying agent in desiccators?

5 points

KOH

GYPSUM

CaCL2

SILICA SAND

Clear selection

100 m3 of a gas at 3 atm pressure and 27 oC is transferred to a chamber of 300 m3 volume maintained at a temperature of 327 oC. What will be the pressure in the chamber?

5 points

6atm

4atm

2atm

1atm

Clear selection

The crystals of__________are ionic solids.

5 points

SUGAR

IRON

DIMAOND

NaCl

Clear selection

Which material possesses the highest pH?

5 points

SOFT DRINKS

BANANAS

MILK OF MAGNESIA

SEA WATER

Clear selection

The electron present in a particular orbit__________energy. *

5 points

RELEASES

DOES NOT RADIATE

ANSORBS

NONE OF THESE

Al2F2SiO4 is named as

5 points

Gibbsite.

Emerald

Bauxite.

Cryolite.

Clear selection

Name the oxide in which N has the highest oxidation number.

5 points

NITROUS OXIDE

NITRIC OXIDE

NITROGEN PEROXIDE

NITROUS ANHYDRIDE

Clear selection

Sulphur has an oxidation state of

5 points

± 2.

+ 4 and +6

None of these.

Both A and B.

Clear selection

CH3-O-CH3 is example of__________isomerism.

5 points

METAMERISM

FUNCTIONAL GROUP

CHAIN

POSITION

Clear selection

____________________are the product of the reaction of an alcohol and aromatic bi-functional acids.

5 points

Acrylic resins.

Polyester resins.

PVCs

Polyamide resins.

Clear selection

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