Explore topic-wise MCQs in General Knowledge.

This section includes 1315 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.

451.

What is the simplest form of matter?

A. Element
B. Molecule
C. Atom
D. Compound
Answer» B. Molecule
Discussion
452.

What is the relative molecular mass of water?

A. 8 u
B. 9 u
C. 16 u
D. 18 u
Answer» E.
Discussion
453.

What is the ratio of masses of hydrogen and oxygen in the water?

A. 0.044444444444444
B. 0.047222222222222
C. 0.052777777777778
D. 0.086111111111111
Answer» C. 0.052777777777778
Discussion
454.

What is the reaction between an acid and a base called?

A. Desalination
B. Crystallisation
C. Neutralisation
D. Sublimation
Answer» D. Sublimation
Discussion
455.

What is the radius of an atom used to measure?

A. Atomic number
B. Atomic mass
C. Atomic size
D. Atomicity
Answer» D. Atomicity
Discussion
456.

What is the purpose of balancing chemical equations?

A. law of conservation of energy
B. law of conservation of mass
C. Both A & B
D. None of the above
Answer» C. Both A & B
Discussion
457.

What is the purpose of adding Gypsum to the cement?_x005F_x000D_

A. For lubrication
B. To slow down its rate of setting
C. To increase its rate of setting
D. To make it strong
Answer» C. To increase its rate of setting
Discussion
458.

What is the product formed when sodium bicarbonate is heated strongly?

A. Sodium Carbonate
B. Sodium Hydroxide
C. Sodium Peroxide
D. Sodium Monoxide
Answer» B. Sodium Hydroxide
Discussion
459.

What is the process of slow cooling of hot glass called?

A. Annealing
B. Humidifying
C. Condensation
D. Decantation
Answer» B. Humidifying
Discussion
460.

What is the process of rust forming on iron called?

A. Rusting
B. Crystallisation
C. Shovel
D. Spade
Answer» B. Crystallisation
Discussion
461.

What is the process of melting also called?

A. Fusion
B. Galvanisation
C. Crystallisation
D. Evaporation
Answer» B. Galvanisation
Discussion
462.

What is the position of metallic ion and non-metallic ion in a chemical formula?_x005F_x000D_

A. Metal ion at second position
B. Non-metal ion at first position
C. Metal ion at first and non-metal ion at second position
D. No option is correct
Answer» D. No option is correct
Discussion
463.

What is the primary component of natural gas?

A. Nitrogen
B. Ethane
C. Propane
D. Methane
Answer» E.
Discussion
464.

What is the pH value of human blood?

A. 8.3
B. 6.8
C. 7.4
D. 6
Answer» D. 6
Discussion
465.

What is the pH of water?

A. 7
B. 5
C. 3
D. 1
Answer» B. 5
Discussion
466.

What is the percentage of methane in biogas?

A. 0.9
B. 0.8
C. 0.6
D. 0.75
Answer» E.
Discussion
467.

What is the oxidation number of carbon in NaHCO3?

A. -4
B. -3
C. 4
D. 2
Answer» D. 2
Discussion
468.

What is the number of groups and periods in the modern periodic table?

A. 18, 7
B. 18, 8
C. 16, 7
D. 16, 8
Answer» B. 18, 8
Discussion
469.

What is the other name of sodium carbonate?

A. Baking soda
B. Washing soda
C. Baking powder
D. No option is correct
Answer» C. Baking powder
Discussion
470.

What is the number of atoms constituting a molecule known as?

A. Atomicity
B. Atomic mass
C. Atomic number
D. Isotopes
Answer» B. Atomic mass
Discussion
471.

What is the net charge on Calcium fluoride?

A. 1+
B.
C. 1­-
D. 2­-
Answer» C. 1­-
Discussion
472.

What is the name of the process where gas is directly converted to solids called?

A. Sublimation
B. Deposition
C. Condensation
D. Evaporation
Answer» C. Condensation
Discussion
473.

What is the name of the acid in grapes?

A. Lactic acid
B. Formic acid
C. Acetic acid
D. Tartaric acid
Answer» E.
Discussion
474.

What is the natural source of Oxalic acid?

A. Tomato
B. Sour milk
C. Ant sting
D. Tamarind
Answer» B. Sour milk
Discussion
475.

What is the molecular formula of Calcium Phosphate?

A. Ca3(PO4)2
B. Ca(PO4)2
C. CaPO4
D. Ca3(PO4)3
Answer» B. Ca(PO4)2
Discussion
476.

What is the molecular formula of Butyne?_x005F_x000D_

A. c3H4
B. c4H6
C. c2H2
D. c4H10
Answer» C. c2H2
Discussion
477.

What is the maximum number of electrons that can be present in a shell represented by shell number ‘n’?_x005F_x000D_

A. 2n
B. 2n2
C. n
D. n2
Answer» C. n
Discussion
478.

What is the maximum  number of states of matter?

A. Three
B. Four
C. Five
D. Variable
Answer» D. Variable
Discussion
479.

What is the main ingredient in face powder?

A. Calcium carbonate
B. Talc
C. Magnesium carbonate
D. China clay
Answer» C. Magnesium carbonate
Discussion
480.

What is the IUPAC name for the following compound?_x005F_x000D_  _x005F_x000D_ H3C-C≡C-H

A. Acetylene
B. Methyl acetylene
C. Butanol
D. Decanoic Acid
Answer» C. Butanol
Discussion
481.

What is the Iupac name for the compound shown below._x005F_x000D_

A. 1-Bromo-3-chlorocyclohexene
B. 2-Bromo-6-chlorocyclohex-1-ene
C. 6-Bromo-2-chlorocyclohexene
D. 3-Bromo-1-chlorocyclohex-1-ene
Answer» E.
Discussion
482.

What is the Greenhouse Effect?

A. The fall in population of plants due to human activity
B. It is the warming of earth's surface due to its atmosphere
C. The polluting effect of burning fossil fuels
D. The heating of the atmosphere due to depletion of the ozone layer
Answer» C. The polluting effect of burning fossil fuels
Discussion
483.

What is the heaviest noble gas?

A. krypton
B. radon
C. helium
D. xenon
Answer» C. helium
Discussion
484.

What is the general formula of alkenes?_x005F_x000D_

A. CnH2n
B. CnH2n+2
C. CnH2n-2
D. CnH2n-1
Answer» B. CnH2n+2
Discussion
485.

What is the general formula for a straight-chain alkane?

A. C2nH2n+3.
B. CnH2n+2
C. CnH2n
D. CnH3n+2.
Answer» C. CnH2n
Discussion
486.

What is the full form of PVC?

A. Phosphonil vinyl Carbonate
B. Polyvinyl S Carbonate
C. Polyvinyl Carbonate
D. Polyvinyl Chloride
Answer» E.
Discussion
487.

What is the freezing point of water in Celsius?

A. 0 deg C
B. 32 deg C
C. -42 deg C
D. -32 deg C
Answer» B. 32 deg C
Discussion
488.

What is the conjugate base of H2O?

A. NH3+
B. OH-
C. H2O
D. All the above
Answer» C. H2O
Discussion
489.

What is the compound formed when Ag+ and Cl- combine?_x005F_x000D_

A. Argon Chlorate
B. Argon Chloride
C. Silver Chloride
D. Silver Chlorate
Answer» D. Silver Chlorate
Discussion
490.

What is the element present in urea

A. C,H,O
B. C,N,O
C. C,N,H
D. C,O,N,H
Answer» E.
Discussion
491.

What is the common name of Sodium Bicarborate?

A. Baking Soda
B. Washing Powder
C. Plaster of Paris
D. Fly Ash
Answer» B. Washing Powder
Discussion
492.

what is the chemical name of the compound _x005F_x000D_ Cu2CO3

A. copper (ii) carbonate
B. copper (iii) carbonate
C. copper (i) carbonate
D. copper carbonate
Answer» D. copper carbonate
Discussion
493.

What is the chemical symbol of Cobalt?_x005F_x000D_

A. Cl
B. Co
C. Ca
D. K
Answer» C. Ca
Discussion
494.

What is the common name of CaOCl2?

A. Baking Powder
B. Baking Soda
C. Bleaching Powder
D. Washing Soda
Answer» D. Washing Soda
Discussion
495.

What is the common characteristic of the elements of the same group in the periodic table?

A. Electrons in outer most shell
B. Total number of electrons
C. Total number of protons
D. Atomic weight
Answer» B. Total number of electrons
Discussion
496.

What is the chemical name of chalk?

A. Calcium Sulphate
B. Calcium Nitrate
C. Calcium Carbonate
D. Calcium Phosphide
Answer» D. Calcium Phosphide
Discussion
497.

What is the chemical formula of Ozone?

A. O
B. O2
C. O3
D. O4
Answer» D. O4
Discussion
498.

What is the chemical formula of aluminium nitride?

A. AlN
B. Al2N
C. AlN2
D. AlN3
Answer» B. Al2N
Discussion
499.

What is the chemical formula of Alkynes?_x005F_x000D_

A. CnH2n−1
B. CnH2n
C. CnH2n−2
D. CnH2n+1
Answer» D. CnH2n+1
Discussion
500.

What is the chemical formula for Sodium Chloride (Salt)?

A. NaCl2
B. NaCl
C. Na2Cl
D. Na2C
Answer» C. Na2Cl
Discussion