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
What is a carat in relation to a diamond?
- Aaccuracy
- BBurden
- CMass
- Ddensity
Question 2 of 50
What do radioactive elements emit?
- Aultraviolet rays
- Bα, β and γ radiation
- Cradio waves
- Dinfrared waves
Question 3 of 50
Match List I with List II and select the correct answer from the codes given below the lists: List 1 List 11 A. Lactic acid 1. Lemon B. Acetic acid 2. Stinking butter C. Citric acid 3. Milk D. Butyric acid 4. Vinegar
- AABCD 1 4 3 2
- BABCD 3 1 4 2
- CABCD 2 3 4 1
- DABCD 3 4 1 2
Question 4 of 50
.......... is used to remove permanent hardness of water.
- ABaking Soda
- BLime
- Cbleaching powder
- Dwashing soda
Question 5 of 50
Which of the following is the most stable element?
- Aoxygen
- Bnitrogen
- CRadium
- Dlead
Question 6 of 50
Hydrogen chloride is a gas, but hydrogen fluoride is a low-volume liquid because
- AH-F bond is strong
- BThe H-F bond is weak
- CDue to hydrogen bonding, molecules get associated.
- DHydrogen fluoride is a weak acid
Question 7 of 50
There are isotones which have ____
- AThe atomic number is the same and the atomic weight is the same
- BDifferent atomic numbers and same atomic weights
- CBoth atomic number and atomic weight different
- DDifferent atomic number and atomic mass but same number of neutrons
Question 8 of 50
'Bhasma' (Base) is that substance which_
- Adonates protons
- Baccepts protons
- Cdonates electrons
- Daccepts an electron pair
Question 9 of 50
What are ³⁶Kr ⁸⁶ and ³⁷Rb ⁸⁷ called?
- Aisoelectronic
- Bisothermal
- CSamnetronic
- DIsotopic
Question 10 of 50
On what principle does the 'hydrogen bomb' work?
- Acontrolled fission reaction
- Buncontrolled fission reaction
- Ccontrolled fusion reaction
- Duncontrolled fusion reaction
Question 11 of 50
Which of the following two organic compounds have the same empirical formula?
- Aethylene and acetylene
- Bmethane and ethane
- Cpropane and butane
- Dacetylene and benzene
Question 12 of 50
Gasohol is a mixture of gasoline and which of the following?
- Aethyl alcohol
- Bmethyl alcohol
- Cbutyl alcohol
- Dethylene glycol
Question 13 of 50
Doctors are of the opinion that people suffering from kidney and gall bladder stones should not consume tomatoes, eggs, milk and cabbage etc. in large quantities so that crystals of the following do not form?
- Acalcium phosphate
- Bcalcium oxalate
- Ccalcium chloride
- Dcalcium sulphate
Question 14 of 50
What is used as bandages in surgery?
- Acalcium sulphate
- Bcalcium chloride
- Caluminum sulfate
- Dcalcium phosphate
Question 15 of 50
Oxygen used for artificial respiration in hospitals is ____
- Aoxygen and helium
- BNitrogen and Argon
- COxygen and Argon
- Doxygen and carbon dioxide
Question 16 of 50
Gasohol, which is used as fuel in motor vehicles, is a mixture of ____
- Aof methane and alcohol
- Bpetrol and alcohol
- Cof hydrogen and alcohol
- Dnatural gas and alcohol
Question 17 of 50
How many elements are there in the fifth period of the modern periodic table?
- A2
- B8
- C18
- D36
Question 18 of 50
'Who invented the atomic bomb?
- AMadame Curie
- BPierre Curie
- CAuto Han
- DAlbert Einstein
Question 19 of 50
The most commonly used material in fluorescent tubes is
- Asodium oxide and argon
- Bsodium vapor and neon
- CMercury paper and organ
- DMercury oxide and argon
Question 20 of 50
The pH value of blood is_
- A5
- B6.4
- C7.4
- D8
Question 21 of 50
Rutherford's scattering experiment proved the existence of what?
- Aatoms in all matter
- Belectrons in atoms
- CNucleus in atoms
- DNeutrons in atoms
Question 22 of 50
Protium, deuterium and tritium are naturally occurring isotopes of ..............
- Ahydrogen
- Bnitrogen
- CCarbon
- DGold
Question 23 of 50
'Phosgene' is the common name of which of the following?
- Acarbonyl chloride
- BPhosphine
- Ccarbon tetrachloride
- Dphosphorus trichloride
Question 24 of 50
Which of the following gases pollutes the air the most?
- Acarbon dioxide
- Bcarbon monoxide
- Csulfur dioxide
- Dhydrocarbons
Question 25 of 50
Carbon dating is used to determine the age of:
- Afossil
- BBack
- Crocks
- DNone of these
Question 26 of 50
Which radioactive element is named after the country of its discoverer?
- ARadium
- BUranium
- CPolonium
- DPalladium
Question 27 of 50
The first organic compound synthesized in the laboratory was
- Alactic acid
- Bglucose
- CUrea
- Duric acid
Question 28 of 50
Which of the following fertilizers has the highest nitrogen content?
- AUrea
- Bammonium nitrate
- Cpotassium nitrate
- Dammonium phosphate
Question 29 of 50
Oxygen and ozone are_
- AAsotros
- BIsotopes
- CIsomers
- Disobars
Question 30 of 50
The isotonic group in the following is-
- A⁶C¹²,⁷N¹⁴,⁸O¹⁶
- B⁶C¹²,⁷N¹⁴,⁸O¹⁸
- C⁶C¹²,⁷N¹⁵,⁸O¹⁶
- D⁶C¹⁴,⁷N¹⁵,⁸O¹⁶
Question 31 of 50
Aluminium metal is extracted from bauxite by—
- Aby fractional distillation
- Bby electrolysis
- Cby sublimation
- Dchromatographically
Question 32 of 50
When heated in air, vermilion gets converted into oxide of….
- AMercury
- BAntimony
- CCopper
- DCadmium
Question 33 of 50
Which of the following acids is produced in the human stomach?
- AFormic acid
- Bsulfuric acid
- Cnitric acid
- Dhydrochloric acid
Question 34 of 50
Organic compounds having the same molecular formula but different structural formulas are called ____.
- Aisotopes
- Bisobar
- Cisomer
- Dallotrope
Question 35 of 50
What is the chemical composition of heavy water?
- AH²O²
- BHO²
- CHDO
- DD²O
Question 36 of 50
In neutralization reaction _______ is formed
- Aacid
- Bashes
- Csalt
- Dsalt and water
Question 37 of 50
The process of formation of vapor from solid camphor is called_
- Aevaporation
- Bfreezing
- Cmelt
- Dsublimation
Question 38 of 50
In the oxidation reaction, the ratio of electronegative element or group is ____
- Athere is a shortage
- BThere is an increase
- Cnever increasing
- Dnone of these
Question 39 of 50
The total number of groups in the modern periodic table is
- A7
- B9
- C16
- D18
Question 40 of 50
In which process vanadium pentoxide is used as a catalyst?
- Acontact process
- BHavers process
- CSolvay process
- Dlead chamber process
Question 41 of 50
Which of the following metals does not form amalgam?
- Asodium
- Bpotassium
- Ccopper
- DIron
Question 42 of 50
When petroleum is heated, the vapor evolved in the largest quantity is ___
- AKerosene
- BSaimojin
- CPetroleum Year
- DVaseline
Question 43 of 50
Coating of wooden objects to protect them from insects
- Aof zinc chloride
- Bof sodium chloride
- Cof ammonium chloride
- Dof silver bromide
Question 44 of 50
The gas used in electric bulb is ____
- Anitrogen
- Bhydrogen
- Coxygen
- Dinert gas
Question 45 of 50
What is the most commonly used bleaching agent?
- Aalcohol
- Bchlorine
- Csodium chloride
- Dcarbon dioxide
Question 46 of 50
'Diamond' is-
- AElement
- Bcompound
- Cmixture
- Dliquid
Question 47 of 50
This process of combustion in which heat and light are produced in a short time is called
- Arapid combustion
- Bslow combustion
- Cspontaneous combustion
- Dexplosion
Question 48 of 50
Which of the following does not contain carbon?
- ADiamond
- Bgraphite
- CCoal
- DNone of these
Question 49 of 50
Bleaching Powder is-
- AElement
- Bcompound
- Cmixture
- Dallotrope
Question 50 of 50
Which gas is used in the manufacture of vegetable ghee?
- Anitrogen
- Bcarbon dioxide
- Chydrogen
- DNeon