Chemistry: MCQ Test
50 questions · pick one option for each · submit when you finish to see your score and the correct answers.
Question 1 of 50
The molecular formula of phosphorus is_
- AP¹
- BP²
- CP³
- DP⁴
Question 2 of 50
Which of the following metals burns in nitrogen?
- Asodium
- BCalcium
- CMagnesium
- DPlatinum
Question 3 of 50
It is used as a catalyst in the contact process of making sulphuric acid.
- Airon powder
- Bplatinum powder
- COxides of nitrogen
- DNickel metal
Question 4 of 50
What are rain coats made of?
- Apoly ethylene
- Bpolystyrene
- CPolycarbonates
- DPosikyorrhodon
Question 5 of 50
Paint applied on the surface of iron prevents it from rusting because it
- Areacts chemically with iron
- BPrevents carbon dioxide from coming into contact with iron
- CChanges the rate of chemical reaction of iron
- DPrevents oxygen and moisture from coming into contact with the iron
Question 6 of 50
Carbon is a_
- AMetal
- Bnonmetal
- Cmetalloid
- Dcompound
Question 7 of 50
Concentrated sulphuric acid is called—
- AMuriatic acid
- BCaro acid
- Coil of vitriol
- DOleum
Question 8 of 50
Oxygen has a positive (+ve) oxygen number
- Ain op²
- BIn CI²O
- CH²O
- DN²O
Question 9 of 50
The name of C²H⁵OH according to IUPAC system is
- AEthanal
- BEthanol
- CPropanone
- DEthyne
Question 10 of 50
Water soluble ash (base) is called_
- Aacid
- Balkali
- Csalt
- DNone of these
Question 11 of 50
Mixing two or more pure substances in any ratio forms -
- AElement
- Bcompound
- Cmixture
- Dgas
Question 12 of 50
It is not advisable to sleep under a tree at night, because then it will cause ___
- Acarbon dioxide is released
- Bcarbon monoxide is released
- CLess oxygen is released
- Dmore oxygen is released
Question 13 of 50
Steam and coal gas are a mixture of what?
- Acarbon dioxide and hydrogen
- Bcarbon monoxide and nitrogen
- Ccarbon monoxide and hydrogen
- Dcarbon dioxide and nitrogen
Question 14 of 50
Lithopone is
- ABaSO⁴ + ZnS
- BBaS + ZnSO⁴
- CBaSO³+ ZnSO⁴
- DZnSO³+ BaSO⁴
Question 15 of 50
The total energy of an electron revolving in an atom is-
- Acannot be negative
- Bcan have any value greater than zero
- Ccan never be positive
- DIt is always positive.
Question 16 of 50
It is known as 'Liquid Gold'.
- Apetroleum
- BPlatinum
- CAquaregia
- DPyrenees
Question 17 of 50
Which one of the following is the largest component of biogas?
- Acarbon dioxide
- Bmethane
- Chydrogen
- Dhydrogen sulfide
Question 18 of 50
By which process can pure water be obtained from sea water?
- ABy distillation
- BBy compaction
- Cby evaporation
- Dby fractional distillation
Question 19 of 50
Formulated the 'Law of Triads' related to the classification of elements.
- ALothar Meyer
- BDoverunner
- CMendeleev
- DNewlands
Question 20 of 50
Industrially manufactured by the Solvay process
- Aammonia
- Bchlorine
- Csodium carbonates
- Dsulfuric acid
Question 21 of 50
Carbon dioxide gas reacts with water to form ______.
- Acarbolic acid
- Bcarbonic acid
- Ccarbomic acid
- Dsulfurous acid
Question 22 of 50
To correct impaired thyroid function, iodized salt is usually given in which of the following forms?
- Apotassium iodate
- Bsodium iodate
- CMagnesium Iodate
- Dpotassium iodide
Question 23 of 50
Helium is preferred over hydrogen in air balloons because
- Ais relatively cheap
- Bis relatively less dense
- CPossesses relatively high lifting power
- Ddoes not form explosive mixtures with air
Question 24 of 50
What are γ-rays made of?
- Ameson particle
- Bneutrino particle
- CHiggs boson
- Delectromagnetic waves
Question 25 of 50
Who first synthesized urea in the laboratory?
- AWilliamson
- BKolve
- CWöhler
- DViolet
Question 26 of 50
The fourth state of matter is
- ASolid
- Bliquid
- CPlasma
- Dgas
Question 27 of 50
¹⁵ P³¹ and ¹⁴Si³⁰ are
- AIsotopic
- Bisothermal
- Cisoelectronic
- DSamnetronic
Question 28 of 50
Gammexene is a_
- Adisinfectant
- Bfungicides
- Cinsecticide
- Dpesticide
Question 29 of 50
Which metal is used to make airplanes and rockets?
- ALimit
- Baluminum
- COut
- DCopper
Question 30 of 50
Radioactivity is measured by-
- AGeiger-Muller counter
- BPolarimeter
- CCalorimeter
- Dbarometer
Question 31 of 50
Used in bleaching hair
- ASulfuric good
- Boxalic acid
- Chydrogen peroxide
- Dheavy water
Question 32 of 50
A negative catalyst is one that
- Adecrease the rate of reaction
- Bincreases the rate of reaction
- Ckeep the rate of the reaction unchanged
- Dbehaves as an induced catalyst
Question 33 of 50
To increase the anti-explosive quality of petrol, _____ is used
- Atetramethyl lead
- Btetahit limit
- CTrimable lead
- Dtriethyl lead
Question 34 of 50
What is 'kaya'?
- Asupercooled liquid
- Bcrystalline solid
- Cliquid crystal
- Dnone of these
Question 35 of 50
The gas used for cooking is mainly
- Amixture of N² and O²
- Bcarbon monoxide
- Cmethane
- Dcarbon dioxide
Question 36 of 50
Which of the following is not an isotope of hydrogen?
- AProtium
- BDeuterium
- Ctritium
- DAtrium
Question 37 of 50
Which acid is considered a 'basic chemical' in the chemical industry?
- AH²CO³
- BHNO³
- CH²SO⁴
- DHCL
Question 38 of 50
What is the full name of LPG?
- ALiquefied Petroleum Gas
- BLiquefied Petroleum Gas
- Cleaded petroleum gas
- DLow petroleum gas
Question 39 of 50
In organic compounds, all the four valencies of the carbon atom are directed towards the four edges of a rhombohedron and carbon is at the centre – who first gave this idea?
- AJ. J. Thomson
- BAlbert Einstein
- CMichael Faraday
- DLeibel and Van't Hoff
Question 40 of 50
Which one of the following is not a monatomic element?
- ACopper
- Bsodium
- CIodine
- DBarium
Question 41 of 50
The colour of brass turns pale in air due to the presence of which of the following?
- Aoxygen
- Bhydrogen sulfide
- Ccarbon dioxide
- Dnitrogen
Question 42 of 50
The necessary conditions for combustion to take place are
- APresence of combustible material
- Bpresence of fuel for combustion
- Cattainment of combustion temperature
- DAll of the above
Question 43 of 50
Which gas is mainly present in the mixture of gases coming out of a septic tank?
- Amethane
- Bammonia
- Chydrogen
- Dnitrogen
Question 44 of 50
Paraffin is a by-product of what?
- Apetroleum refining
- Bprocessing of agricultural waste
- CCottage industries engaged in beekeeping
- Dleather industry
Question 45 of 50
Stainless steel is an alloy, whereas 'air' is a-
- Amixture
- Bcompound
- CElement
- DMerger
Question 46 of 50
The uncertainty principle was formulated by-
- AEinstein
- BHeisenberg
- CRutherford
- DPaulie
Question 47 of 50
Under what conditions does a real gas behave like an ideal gas?
- Ahigh pressure and low temperature
- Blow pressure and high temperature
- Chigh pressure and high temperature
- Dlow pressure and low temperature
Question 48 of 50
Which of the following fuels causes minimum environmental pollution?
- Ahydrogen
- BCoal
- Cdiesel
- DKerosene
Question 49 of 50
The change of a solid substance directly into vapor state without changing into liquid is called_
- Adistillation
- Bboiling
- Csublimation
- Dcompaction
Question 50 of 50
Methane is a colorless, odorless, non-toxic, but flammable gas. What is its common name?
- Ablue vitriol
- Blaughing gas
- CHeating gas
- DMarsh gas