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
Which of the following is not a fuel element?
- AUranium
- BThorium
- CRadium
- Dhelium
Question 2 of 50
The molecular formula of sulphur is_
- AS
- BS²
- CS⁴
- DS⁸
Question 3 of 50
Which gas is present in both natural gas and biogas?
- Amethane
- Bbutane
- Chydrogen
- Dcarbon monoxide
Question 4 of 50
Which of the following helps in burning?
- Aoxygen
- Bcarbon monoxide
- Cnitrogen
- Dcarbon dioxide
Question 5 of 50
Which of the following explosives is named 'Nobel Oil'?
- AT.N.G.
- BT.N.P.
- CT.N.A.
- DT.N.T.
Question 6 of 50
Liquid sodium chloride can conduct electric current because it contains
- Afree electrons
- Bfree ions
- Cfree molecules
- Dsodium and chlorine atoms
Question 7 of 50
Which of the following is 'Vayu'?
- AElement
- Bcompound
- Cmixture
- Dliquid
Question 8 of 50
Absolute zero temperature is—
- Athe starting point of any temperature scale
- Btheoretically lowest possible temperature
- CThe temperature at which all liquid substances freeze.
- DThe temperature at which all substances are in the vapor phase.
Question 9 of 50
Stones formed in human kidneys are usually made of ______
- Aof calcium oxalate
- Bof sodium acetate
- Cof magnesium sulfate
- Dof calcium
Question 10 of 50
Which of the following is generally called the 'fuel of the future'?
- Ahydrogen
- Bmethane
- Cnatural gas
- DEthanol
Question 11 of 50
Silver articles turn black when kept in the open for a long time due to the formation of which of the following?
- AH²S
- BAgS
- CAgSO⁴
- DAgS
Question 12 of 50
It is used to make medicine
- ABenzoic acid
- Bpicric acid
- Coxalic acid
- DCitric acid
Question 13 of 50
The most abundant element on Earth is
- Aoxygen
- Bsilicon
- Caluminum
- Dpenis
Question 14 of 50
Who is credited with discovering inert gases?
- APriestley
- BRaje
- CSheele
- DCavendish
Question 15 of 50
The gas used to extinguish fire is ____
- ANeon
- Bnitrogen
- Ccarbon dioxide
- Dcarbon monoxide
Question 16 of 50
Which gas in the atmosphere absorbs ultraviolet rays?
- Aozone
- Bmethane
- Cnitrogen
- Dhelium
Question 17 of 50
What is 'kaya'?
- Asupercooled liquid
- Bcrystalline solid
- Cliquid crystal
- Dnone of these
Question 18 of 50
The name of C²H⁵OH according to IUPAC system is
- AEthanal
- BEthanol
- CPropanone
- DEthyne
Question 19 of 50
Who determined the pH value?
- ALavoisier
- BPriestley
- CCavendish
- DSarinson
Question 20 of 50
Which of the following fertilizers has the highest percentage of nitrogen?
- AUrea
- Bammonium nitrate
- Cammonium sulphate
- Dcalcium nitrate
Question 21 of 50
Due to excess of which in the air, the leaves of the trees turn black and fall?
- ACO²
- BSo²
- CCO
- DNH³
Question 22 of 50
The trade name of lead oxide (PbO) is
- ALitharge
- BGalena
- CCinnabar
- DRutile
Question 23 of 50
Graphite is used in nuclear reactors.
- Alike fuel
- Blike a lubricant
- Cdiluent-like
- Dnone of the above
Question 24 of 50
Which fundamental particles are present in equal numbers in an atom?
- Aprotons and neutrons
- Belectrons and protons
- Cneutrons and electrons
- Delectron, proton and neutron
Question 25 of 50
The purest form of water is_
- Atap water
- Brain water
- Cgroundwater
- Ddistilled water
Question 26 of 50
The molecule with linear structure is
- ACO²
- BNO²
- CSO²
- DS¹ O²
Question 27 of 50
Which of the following elements is used in solar cells?
- ASilicon
- BCerium
- CAstatine
- DVanadium
Question 28 of 50
The refrigerant 'Freon' is ____
- Acalcium tetrachloride
- BDifluoro dichloro methane
- CFluorspar and Feldspar
- DHydrofluoric acid
Question 29 of 50
In which process vanadium pentoxide is used as a catalyst?
- Acontact process
- BHavers process
- CSolvay process
- Dlead chamber process
Question 30 of 50
Which method is used for vulcanization of natural rubber?
- Aheating with sulfur
- BHeating with carbon black
- Cadding chlorine gas
- DAddition of diphenylamine
Question 31 of 50
Which of the following gases is used to purify drinking water?
- Asulfur dioxide
- Bchlorine
- Ccarbon dioxide
- DFluorine
Question 32 of 50
Which of the following gases is responsible for the depletion of the ozone layer
- Acarbon monoxide
- Bchlorofluorocarbons
- Ccarbon dioxide
- Dnitrous oxide
Question 33 of 50
The pH value indicates ______.
- AThe quality of the chemical used to make the photo from the negative
- BThe acidic or alkaline nature of a solution
- Cearthquake intensity rating
- DMilk purity rating
Question 34 of 50
The classification of elements in the modern periodic table is based on
- Aatomic number
- Batomic mass
- Catomic volume
- Datomic density
Question 35 of 50
Which one of the following is an example of a non-cellulosic fibre?
- AJute
- BRayon
- CNylon
- Dlinen
Question 36 of 50
The chemical properties of an element depend on-
- Aon atomic mass
- Bon atomic number
- Con the mass number
- Don atomic weight
Question 37 of 50
Potato chips are made in plastic bags.
- ANitrogen in the atmosphere
- Bin a hydrogen atmosphere
- Coxygen in the atmosphere
- DIodine in the environment
Question 38 of 50
The petrol sold at petrol stations is blended gasoline. When mixed_
- AThe antiknock properties of petrol increase
- Bpetrol becomes cheaper
- CThe smell is reduced
- DThe smoke emitted on burning of petrol is reduced.
Question 39 of 50
The amount of heat obtained by completely burning one gram of a fuel in air or oxygen is called—
- Acombustion
- Bcalorific value
- Ccalorific value
- Dignition temperature
Question 40 of 50
Plastic is actually—
- AComplex compounds of saturated hydrocarbons
- BHigh polymers of unsaturated hydrocarbons
- CIsomers of unsaturated hydrocarbons
- Dan inorganic complex compound
Question 41 of 50
The pH value of milk is ____
- A6.1
- B6.6
- C7.4
- D8
Question 42 of 50
The polluting gas emitted from vehicles is mainly ______.
- Acarbon dioxide
- Bcarbon monoxide
- CMarsh gas
- Dnitrogen oxide
Question 43 of 50
What is the number of protons in a negatively charged atom (anion)?
- Agreater than the atomic number of the element
- Bless than the atomic number of the element
- Cmore than the number of electrons in the atom
- Dless than the number of electrons in the atom
Question 44 of 50
With which of the following is the tape of a tape recorder coated?
- Ablue vitriol
- Bferromagnetic powder
- Czinc oxide
- Dcopper
Question 45 of 50
The element used to vulcanize wood is ____
- ASulphur
- Bbromine
- CSilicon
- DPhosphorus
Question 46 of 50
For safety reasons, what is filled in LPG cooking gas cylinders to make the gas smell good, so that leakage can be detected quickly?
- Aglycol
- Bglycerol
- CMercaptan
- Dalcohol
Question 47 of 50
Which of the following gases is coloured?
- Aoxygen
- Bchlorine
- Chydrogen
- Dnitrogen
Question 48 of 50
'Who invented the atomic bomb?
- AMadame Curie
- BPierre Curie
- CAuto Han
- DAlbert Einstein
Question 49 of 50
Who discovered 'neutron'?
- AJames Chadwick
- BErnest Rutherford
- CJ.J. Thomson
- DJohn Dalton
Question 50 of 50
The solution applied to the face after shaving has a cooling effect. This property is due to the presence of which compound?
- Aethyl alcohol
- Bmethyl alcohol
- CSalicylic acid
- DNone of these