Chemistry set 1 MCQs

Practice interactive objective questions for this topic. Select an option to instantly verify your answer and read detailed explanations.

Showing 504 questions
Q.421 The 'Saponification Value' is used to determine the:
A acidity of fat
B average molecular weight of fat
C unsaturation in fat
D purity of alcohol
Discuss / Board
Q.422 Which of the following is 'Heavy Water' used for in nuclear reactors?
A coolant and moderator
B fuel
C shielding material
D control rod material
Discuss / Board
Q.423 Which among the following is a 'Heterogeneous' mixture?
A brass
B air
C oil and water
D salt solution
Discuss / Board
Q.424 What is the common name of 'Carbonyl Chloride'?
A phosgene
B teargas
C mustard gas
D laughing gas
Discuss / Board
Q.425 Which of the following is not a 'Synthetic Fiber'?
A rayon
B nylon
C polyester
D jute
Discuss / Board
Q.426 The 'Lattice Energy' of an ionic compound increases when:
A ionic radii increase
B charges on ions increase
C inter-ionic distance increases
D atomic weight increases
Discuss / Board
Q.427 Which of the following elements has the lowest 'electronegativity' on the Pauling scale?
A fluorine
B cesium
C helium
D oxygen
Discuss / Board
Q.428 The 'Tyndall effect' is most clearly observed in which of the following?
A true solution
B suspension
C colloidal solution
D saturated solution
Discuss / Board
Q.429 What is the 'pH' of a 0.01 M NaOH solution?
A 2
B 10
C 12
D 14
Discuss / Board
Q.430 Which gas is released when 'Calcium Carbide' reacts with water?
A methane
B ethene
C ethyne
D butane
Discuss / Board
Q.431 The 'Brownian Movement' of colloidal particles is caused by:
A convection currents
B unbalanced bombardment by solvent molecules
C electrical charge on particles
D gravity
Discuss / Board
Q.432 Which of the following is used as an 'antidote' for lead poisoning?
A edta
B aspirin
C charcoal
D magnesium sulphate
Discuss / Board
Q.433 The 'Bond Angle' in a water molecule is approximately:
A 109.5
B 120
C 104.5
D 180
Discuss / Board
Q.434 Which of the following 'Halogens' is a solid at room temperature?
A fluorine
B chlorine
C bromine
D iodine
Discuss / Board
Q.435 Which among the following is used as a 'Refrigerant' that is ozone-friendly?
A cfcs
B hfcs
C carbon tetrachloride
D halons
Discuss / Board
Q.436 The 'Common Ion Effect' describes the:
A increase in solubility
B suppression of dissociation of a weak electrolyte
C increase in degree of ionization
D formation of a complex ion
Discuss / Board
Q.437 Which of the following has the highest 'Boiling Point'?
A hf
B hcl
C hbr
D hi
Discuss / Board
Q.438 The 'Gold Foil' experiment led to the conclusion that:
A electrons revolve in orbits
B most of the atom is empty space
C protons are in the nucleus
D neutrons exist in the nucleus
Discuss / Board
Q.439 Which chemical is used to remove 'Permanent Hardness' of water?
A slaked lime
B washing soda
C baking soda
D bleaching powder
Discuss / Board
Q.440 The 'Isomerism' shown by compounds having the same molecular formula but different functional groups is:
A chain isomerism
B position isomerism
C functional isomerism
D metamerism
Discuss / Board
Q.441 Which among the following is used as an 'antiseptic' in soaps?
A bithionol
B chloroxylenol
C terpineol
D all of the above
Discuss / Board
Q.442 The 'Critical Pressure' is the minimum pressure required to:
A solidify a gas
B liquefy a gas at its critical temperature
C vaporize a liquid
D reach absolute zero
Discuss / Board
Q.443 Which of the following is 'Dry Ice'?
A frozen water
B solid carbon dioxide
C frozen nitrogen
D solid methane
Discuss / Board
Q.444 Which of the following 'Quantum Numbers' determines the shape of an orbital?
A principal
B azimuthal
C magnetic
D spin
Discuss / Board
Q.445 Which among the following is a 'Sublimation' material used in mothballs?
A camphor
B naphthalene
C anthracene
D all of the above
Discuss / Board
Q.446 The 'Heisenberg Uncertainty Principle' is significant for:
A microscopic particles
B macroscopic objects
C stationary objects
D all of the above
Discuss / Board
Q.447 Which of the following is not a 'Greenhouse Gas' listed under the Kyoto Protocol?
A carbon dioxide
B methane
C nitrogen
D sulphur hexafluoride
Discuss / Board
Q.448 The 'Calorific Value' of a fuel is expressed in:
A kj/kg
B kj/mol
C j/s
D kwh
Discuss / Board
Q.449 Which among the following is used in the 'Lead-Acid' storage battery?
A hcl
B h2so4
C hno3
D koh
Discuss / Board
Q.450 The 'Basicity' of orthophosphoric acid (H3PO4) is:
A 1
B 2
C 3
D 4
Discuss / Board

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