Chemistry Objective GK Mock Test – 6

A quick 25 questions article on Chemistry – General Knowledge – MCQs important for competitive exams like in UPSC, state civil services, olympiads etc.

Other similar articles: Test – 1 | Test – 2 | Test – 3 | Test – 4 | Test – 5 | Test – 6 | Test – 7 | Test – 8 | 75 One Liners.

Questions Section

Que (1): What are soaps?
A. Sodium or potassium salts of heavier fatty acids
B. Sodium or potassium salts of lighter fatty acids
C. Sodium salts of heavier fatty acids
D. Potassium salts of heavier fatty acids
Answer: Sodium or potassium salts of heavier fatty acids
Explanation: nan

Que (2): Which material is suitable for water purification?
A. Charcoal
B. Cotton balls
C. Soil
D. Zeolites
Answer: Zeolites
Explanation: nan

Que (3): Which chemical is used in foam fire extinguishers?
A. Iron sulphide
B. Aluminium sulphate
C. Iron sulphate
D. Aluminium sulphide
Answer: Aluminium sulphate
Explanation: nan

Que (4): Which harmful element exists in tobacco ?
A. Hydrogen cyanide
B. Lead
C. Formaldehyde
D. Nicotine
Answer: Nicotine
Explanation: nan

Que (6): During electrolysis, which the species are discharged at cathode?
A. Anions
B. Cations
C. Electrons
D. Protons
Answer: Cations
Explanation: nan

Que (7): Fisher-Tropsch process is used in the manufacture of which liquid?
A. Unleaded petrol
B. Octane petrol
C. 95 RON petrol
D. Synthetic petrol
Answer: Synthetic petrol
Explanation: nan

Que (8): Which substance is used as antiknock compound?
A. Tetraethyllead
B. Alcohol
C. Ferrocene
Answer: TEL
Explanation: nan

Que (9): The deficiency of which leads to dental caries?
A. Bromine
B. Flourine
C. Chlorine
D. Iodine
Answer: Fluorine
Explanation: nan

Que (10): Non-stick cooking utensils are coated with which metal?
A. Nylon
B. Teflon
C. Copper
D. Stainless steel
Answer: Teflon
Explanation: nan

Que (11): How can Permanent hardness of water be removed?
A. By adding baking soda
B. By adding washing soda
C. By adding soap
D. By adding flour
Answer: By adding washing soda
Explanation: nan

Que (12): What is generally present in tonics?
A. Methanol
B. Ethanol
C. Propanol
D. Butanol
Answer: Ethanol
Explanation: nan

Que (13): What does mixture of CS2 and H2S on passing over heated copper give?
A. Ethane
B. Methane
C. Propane
D. Butane
Answer: Methane
Explanation: nan

Que (14): What is the The chemical part of the dye that absorbs light and produces colour called as?
A. Cellulosics
B. Acrylic
C. Polyester fibers
D. A pigment
Answer: A pigment
Explanation: nan

Que (15): Which when dissolved in H2O gives hissing sound?
A. Limestone
B. Basalt rock
C. Wood
D. Marble
Answer: Limestone
Explanation: nan

Que (16): Which metal is not attacked by the environment?
A. Gold
B. Silver
C. Titanium
D. Copper
Answer: Gold
Explanation: nan

Que (17): Which colloidal solution is used in photography?
A. Colloidal silver bromite
B. Colloidal bromite
C. Colloidal copper bromite
D. all of these
Answer: Colloidal silver bromite
Explanation: nan

Que (18): A deuterium nucleus consists of which particles?
A. One proton and one neutron
B. One proton and two neutron
C. One electron and one neutron
D. Two proton and one neutron
Answer: One proton and one neutron
Explanation: nan

Que (19): How many moles are there is 140 g of Si (atomic mass of silicon is 28)?
A. 1
B. 3
C. 5
D. 9
Answer: 5
Explanation: nan

Que (20): Which is used in storage batteries?
A. Lead
B. Titanium
C. Copper
D. Zinc
Answer: Lead
Explanation: nan

Que (21): An element X forms an oxide X0 What is the valency of X?
A. 1
B. 9
C. 4
D. 6
Answer: 6
Explanation: nan

Que (22): Which polymeric material is used for making bullet proof jacket?
A. polyethylene
B. polypropylene
D. none of these
Answer: KEVLAR
Explanation: nan

Que (23): Which is the main ingredient in cement ?
A. Lime stone
B. Water
C. Silicone
D. Chalk
Answer: Lime stone
Explanation: nan

Que (24): Which element is produced when concentrated cinnabar is roasted in the excess of air?
A. Argon (Ag)
B. Arsenic
C. Aluminium (Al)
D. Mercury (Hg)
Answer: Mercury (Hg)
Explanation: nan

Que (25): Which nuclides having the same number of neutrons but different number of protons or mass number?
A. Isotones
B. Isotopes
C. Isotypes
D. none of these
Answer: Isotones
Explanation: nan

Que (26): Which compound is known as white vitriol?
A. 2ZnSO.7H2O
B. ZnSO.7H2O
C. ZnSO.6H2O
D. ZnSO.9H2O
Answer: ZnSO.7H2O
Explanation: nan

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