General knowledge(GK)/Chemistry MCQS -General Knowledge Sample Test,Sample questions

Question:
 
The first metal used by man was

1.iron

2.copper

3.gold

4.bronze


Question:
 
The graphite rods in the nuclear reactor

1. react with U to release energy

2.produce neutrons

3.undergo combustion which triggers the nuclear fission

4. convert fast moving neutrons into thermal neutrons


Question:
 
The hardest form of carbon is

1.coke

2.graphite

3.diamond

4.charcoal


Question:
 
The high reactivity of fluorine is due to

1. its high electro negativity

2.small size of fluorine atom

3.availability of d-orbitals

4. strong F - F bond


Question:
 
The inert gases are ____ in water

1.sparingly soluble

2.insoluble

3.soluble

4.None of these


Question:
 
The luster of a metal is due to

1.its high density

2.its high polishing

3. its chemical inertness

4.presence of free electrons


Question:
 
The main active constituent of tea and coffee is

1.nicotine

2.chlorophyll

3.caffeine

4.aspirin


Question:
 
The major constituent of air is

1.nitrogen

2.carbon dioxide

3.oxygen

4.hydrogen


Question:
 
The mass number of a nucleus is

1.always less than its atomic number

2.the sum of the number of protons and neutrons present in the nucleus

3.always more than the atomic weight

4.a fraction


Question:
 
The metal that is usually extracted from sea water is

1.Ca

2.Na

3.K

4.Mg


Question:
 
The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in

1.1.8 gram of H2O

2.12 moles of KMnO4

3. 0.6N H2SO4

4.4.6 gram of C2H5OH


Question:
  
The formula C6H5-CO-CH3 represents

1.Acetone

2.Acetic acid

3.Acetophenone

4.Phenyl acetate


Question:
  
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

1.helium

2.ozone

3.oxygen

4.methane


Question:
  
The mineral containing both magnesium and calcium is

1.magnesite

2.calcite

3.carnallite

4.dolomite


Question:
  
The most abundant rare gas in the atmosphere is

1.He

2.Ne

3.Ar

4.Xe


Question:
  
The most commonly used bleaching agent is

1.alcohol

2.carbon dioxide

3.chlorine

4.sodium chlorine


Question:
  
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

1.atomic structure

2.metallurgy

3.periodic table of contents

4. discovery of elements


Question:
  
The National Chemical Laboratory is situated in

1. New Delhi

2.Bangalore

3.Pune

4.Patna


Question:
  
The nuclear particles which are assumed to hold the nucleons together are

1.electrons

2.positrons

3.neutrons

4.mesons


Question:
  
The nucleus of a hydrogen atom consists of

1.1 proton only

2.1 proton + 2 neutron

3. 1 neutron only

4.1 electron only


Question:
  
The number of electrons presents in H+ is

1.zero

2.one

3.two

4.three


Question:
  
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

1.4

2.5

3.2

4.zero


Question:
  
The octane number of zero is assigned to

1.2-methyl octane

2.n-heptane

3.iso-octane

4.3-methyl octane


Question:
  
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of

1.an addition reaction

2.a condensation reaction

3. an oxidation reaction

4.an elimination reaction


Question:
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

1.0.094467593

2. 2 : 16 : 1

3.0.052800926

4.0.042372685


Question:
he number of waves in n x 10th Bohr's orbit are

1.n2

2.n

3.n-2

4.n3


Question:
The nucleus of an atom consists of

1. electrons and neutrons

2.electrons and protons

3.protons and neutrons

4.All of the above


Question:
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

1.3 billion years

2.100 years

3.0.01 minute

4.13 days


Question:
The gas used for artificial ripening of green fruit is

1.ethylene

2.ethane

3. carbon dioxide

4.acetylene


Question:
The gas used in the manufacture of vanaspati from vegetable oil is

1.hydrogen

2.oxygen

3.nitrogen

4.carbon dioxide


Question:
The heat energy produced when the human body metabolises 1 gram of fat is

1.30 KJ

2.1 KJ

3. 39 KJ

4.29 KJ


Question:
The heat required to raise the temperature of body by 1 K is called

1.specific heat

2.thermal capacity

3. water equivalent

4. None of the above


Question:
The hottest part of the gas flame is known as

1.luminous zone

2.dark zone

3.blue zone

4.None


Question:
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

1.carbon

2.hydrogen

3.oxygen

4.nitrogen


Question:
The hydronium ion is

1.H+

2.HO -

3.H2+

4.H3O+


Question:
The inexpensive and commonly used variety of glass is called soda glass. It is called so because

1.was used initially for making bottles of soda(carbonated drink)

2.is made using soda(sodium carbonate)

3.was initially used for storing sodium carbonate

4.is made using soda lime


Question:
The inherited traits of an organism are controlled by

1.RNA molecules

2.nucleotides

3.DNA molecules

4.enzymes


Question:
The ionic radii of N3-, O2-, F- and Na+ follows the order

1.N3- > O2- > F- > Na+

2.N3- > Na+ > O2- > F-

3.Na+ > O2- > N3- > F-

4.O2- > F- > Na+ > N3-


Question:
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

1.5x/36

2.5x

3.7.2 x

4.x/6


Question:
The iron ore magnetite consists of

1.Fe2O3

2.Fe3OH4

3.FeCO3

4.3Fe2O3 .. 3H2O


Question:
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

1.chain isomerism

2. functional group isomerism

3.positional isomerism

4.metamerism


Question:
The items amenable to detection by soft x-rays are

1.contrabands

2.lead in bullets

3.narcotics

4.genuine coins from counterfeit coins


Question:
The Latin word formica means ant. The name formic acid is derived from this Latin word because

1.this acid, in ancient times, was used to eliminate ant-hills

2.this corrosive acid is secreted by ants to drive away their enemies

3. this acid was first obtained by the distillation of ants

4.ants are attracted by the odour of this acid


Question:
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is

1.Dalton's law

2.Gay Lussac's law

3.Henry's law

4.Raoult's law


Question:
The main chemical constituent of clay is

1.silicon oxide

2.aluminium borosilicate

3.zeolites

4. aluminium silicate


Question:
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is

1.cineole

2.engenol

3.geraniol

4.limonene


Question:
The main use of salt in the diet is to

1.make the taste of food better

2.produce in small amounts the hydrochloric acid required for the digestion of food

3.ease the process of cooking

4.increase the solubility of food particles in water


Question:
The mass number of an atom is equal to

1. the number of protons

2.the number of protons and electrons

3.the number of nucleons

4. the number of neutrons


Question:
The mass of one Avogadro number of helium atom is

1.1.00 gram

2.4.00 gram

3.8.00 gram

4.4 x 6.02 x 1023 gram


Question:
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

1.2.05 gram

2.3.05 gram

3.4.05 gram

4.5.05 gram


Question:
The material which can be deformed permanently by heat and pressure is called a

1.thermoplastic

2.thermoset

3.chemical compound

4.polymer


Question:
The maximum number of covalent formed by nitrogen is

1.1

2.2

3.3

4.4


Question:
The maximum number of isomers for an alkene with molecular formula C4H8 is

1.5

2.4

3.2

4.3


Question:
The metal does not give H2 on treatment with dilute HCL is

1.Zn

2.Fe

3.Ag

4.Ca


Question:
The metal that is used as a catalyst in the hydrogenation of oils is

1.Ni

2.Pb

3.Cu

4.Pt


Question:
The metal used to recover copper from a solution of copper sulphate is

1.Na

2.Ag

3.Hg

4.Fe


Question:
The metallurgical process in which a metal is obtained in a fused state is called

1.smelting

2.roasting

3.calcinations

4. froth floatation


Question:
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

1.liquation

2.leaching

3.levigation

4.magnetic separation


Question:
The method that cannot be used for removing permanent hardness of water is

1. adding sodium carbonate

2.distillation

3. adding caustic soda

4.boiling


Question:
The molecular formula of phosphorous is

1.P1

2.P2

3.P3

4.P4


Question:
The molecule which has the highest percentage of ionic character among the following is

1.HI

2.HF

3.HCI

4.HBr


Question:
The molecules of which gas have highest speed?

1.H2 at -73oC

2.CH4 at 300 K

3.N2 at 1,027oC

4.O2 at 0oC


Question:
The monomer of polythene is

1.vinyl chloride

2.vinyl chloride

3.ethyl alcohol

4. None of the above


Question:
The most electronegative element among the following is

1.sodium

2.bromine

3.fluorine

4.oxygen


Question:
The most electropositive elements among the following is

1.Na

2.Ca

3.K

4.Cs


Question:
The most extensive, commercially useful source of thorium as monazite sand occurs in India at

1.Orissa coast

2.Travancore coast

3.West Bengal coast

4.Gujarat coast


Question:
The most malleable metal is

1.platinum

2.silver

3.iron

4.gold


Question:
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

1.p-electrons in Ne(Z = 10)

2.s-electrons in Mg(Z = 12)

3.d-electrons in Fe(Z = 26)

4.p-electrons in CI(Z = 17)


Question:
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

1.1 gram of molecule

2. 0.5 gram of molecule

3.5 gram of molecule

4.10 gram of molecule


Question:
The number of moles of solute present in 1 kg of a solvent is called its

1.molality

2.molarity

3.normality

4.formality


Question:
The oil used in the froth floatation process is

1.coconut oil

2.olive oil

3.kerosene oil

4.pine oil


Question:
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called

1.granite

2.basalt

3. igneous rocks

4.sedimentary rocks


Question:
The ore which is found in abundance in India is

1.monazite

2.fluorspar

3.bauxite

4.magnetite


Question:
What are the number of moles of CO2 which contains 16 g of oxygen?

1.0.5 mole

2.0.2 mole

3.0.4 mole

4. 0.25 mole


Question:
Zone refining is used for the purification of

1.Au

2.Ge

3.Ag

4.Cu


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