Basic Chemistry MCQs with Answers (Multiple Choice Questions)
Welcome to our comprehensive blog post on Basic Chemistry MCQs with Answers, designed to sharpen your understanding of fundamental concepts in chemistry. Whether you’re a student preparing for an exam or simply eager to expand your knowledge, we’ve curated a selection of multiple-choice questions that cover a range of topics.
By exploring these questions, you’ll not only reinforce your understanding of chemistry but also gain valuable insights into related concepts, such as atomic structure, chemical reactions, and periodic trends. Get ready to test your knowledge and unlock a deeper appreciation for the wonders of chemistry!
Basic Chemistry MCQs with Answers
Unit 1
1: Al-Razi wrote how many books?
- a) 10
- b) 20
- c) 26
- d) 30
c) 26
2: Who is known as the father of Chemistry?
- a) Imam Al Razi
- b) Jbber Ibne Hahyan
- c) Al Beruni
- d) Yaqoob Al Kandi
b) Jabber Ibne Hayan
3: The study of those compounds which contains Carbon and Hydrogen is called?
- a) Analytical Chemistry
- b) Biochemistry
- c) Organic Chemistry
- d) Physical Chemistry
c) Organic Chemistry
4: A piece of matter in pure form is called_________.
- a) Matter
- b) Compound
- c) Mixture
- d) Substance
d) Substance
5: ________ can be simplified chemically?
- a) Compound
- b) Element
- c) Mixture
- d) Substance
a) Compound
6: Ca is for:
- a) Calcium
- b) Carbon
- c) Sulfur
- d) Magnesium
a) Calcuim
7: __________ is an example of compound.
- a) Na
- b) NaCl
- c) Boron
- d) Carbon
b) NaCl
8: ____________is an example of homogenious.
- a) Sand in H2O
- b) Salad
- c) NaCl in H2O
- d) Dirt
c) NaCl in H2/sub>O
9: Atomic number of Carbon (C) is:
- a) 10
- b) 5
- c) 6
- d) 12
c) 6
10: Mass number of Carbon is:
- a) 10
- b) 6
- c) 10
- d) 12
d) 12
Unit 2
11: Isotopes are the atoms of the same element having different numbers of _________.
- a) Electrons
- b) Protons
- c) Neutrons
- d) All
c) Neutrons
12: A most recent method of Carbon dating involves the use of __________.
- a) C-11
- b) C-12
- c) C-13
- d) C-14
d) C-14
13: Potassium has the electronic arrangement 2,8,8,1. What is its Proton number?
- a) 11
- b) 18
- c) 19
- d) 17
c) 19
14: Dolton atomic theory was proposed in:
- a) 1808
- b) 1816
- c) 1911
- d) 1913
a) 1808
15: When an electron goes far from Nucleus, its energy:
- a) Stay the same
- b) Increases
- c) Decreases
- d) Become zero
b) Increases
16: Electron is _________ time lighter than Neutron.
- a) 1830
- b) 1838
- c) 1842
- d) 1846
c) 1842
17: The f sub-shell has _________ orbitals.
- a) 3
- b) 5
- c) 7
- d) 9
c) 7
18: Electron fell first to ________ energy sub-shell.
- a) Lower
- b) Higher
- c) Any energy sub-shell
- d) None of these
a) Lower
19: Ruther Ford’s model of an atom consists of __________ charged Nucleus.
- a) Negatively
- b) Positively
- c) Both
- d) None
b) Positively
20: The number of Neutron in Carbon-14:
- a) 4
- b) 6
- c) 8
- d) 12
c) 8
Unit 3
21: The physical and chemical properties of the elements are the periodic function of their__________.
- a) Mass number
- b) Atomic number
- c) Electronegativity
- d) Ionization potential
b) Atomic number
22: The only letter that does not appear in the periodic table is:
- a) S
- b) T
- c) E
- d) J
d) J
23: Those elements which show variable valency are called:
- a) Transition elements
- b) Representative elements
- c) Rare elements
- d) Natural elements
a) Transition elements
24: All atoms of elements in the same group have the same number of:
- a) Valence electrons
- b) Valence shells
- c) Bond pair
- d) None of these
a) Valence electron
25: The least electronegative atom is:
- a) H
- b) Cs
- c) He
- d)Bo
b) Cs
26: Electronegativity along the period (left to right):
- a) Increases
- b) Decreases
- c) Renmain same
- d) Becomes zero
a) Increases
27: An electron has E.configration 2,8,1, belongs to:
- a) Group I, Period III
- b) Group I, Period II
- c) Group III, Period I
- d) Group IV, Period IV
a) Group I, Period III
28: S-Block elements are:
- a) Metals
- b) Non-metals
- c) Metalloids
- d) Transitions
a) Metals
29: Shielding effect is due to:
- a) Neutron
- b) Proton
- c) Proton and Neutron
- d) Electron
d) Electron
30: The Latin name for gold was:
- a) Argentum vivum
- b) Aurum
- c) Stibium
- d) Cyprium
b) Aurum
Unit 4
31: Calcium has _______ nature.
- a) Divalent
- b) Trivalent
- c) Monovalent
- d) None
a) Divalent
32: In a single covalent bond ________ electrons are shared.
- a) One
- b) Two
- c) Three
- d) Four
b) Two
33: If the electronegativity difference is greater than _________ electron transfer will occur.
- a) 1.3
- b) 2.6
- c) 1.7
- d) 3.5
c) 1.7
34: If the electronegativity difference is less than 1.7, then ________ bond will be formed.
- a) Ionic
- b) Dative
- c) Metallic
- d) Covalent
d) Covalent
35: An arrow (→) represent _________ bond.
- a) Dative
- b) Aonic
- c) Co-ordinate covalent
- d) Both a and c
d) Both a and c
36: Metals are formed from_________.
- a) atoms
- b) ions
- c) nucleous
- d) None of these
a) atoms
37: Molecular shape of ________ is linear.
- a) NH3
- b) CO2
- c) CH9
- d) BF3
b) CO2
38: Ionic compounds are _______ at room temperature.
- a) Solid
- b) Liquid
- c) Gas
- d) None
a) Solid
39: NH3 has ________ covalent bond.
- a) single
- b) double
- c) triple
- d) none
c) triple
40: _________ does not form a stable ion with the same electronic configuration as Neon.
- a) Calcium
- b) Sodium
- c) Magnesium
- d) Chlorine
d) Chlorine
Unit 5
42: The temperature at which the liquid and solid state exists in equilibrium is called___________.
- a) Boiling point
- b) Melting point
- c) Freezing point
- d) Equal temperature point of liquid
c) Freezing point
43: Absolute temperature is the temperature on the __________ scale.
- a) Celcius
- b) Ferenheite
- c) Kelvin
- d) Any
c) Kelvin
44: The compressibility of a substance is the change in volume with per unit change in _________.
- a) tempreture
- b) pressure
- c) area
- d) mass
b) pressure
45: The highest energy state of matter:
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
c) Gas
46: Bucky Ball was discovered in:
- a) 1885
- b) 1985
- c) 1903
- d) 1896
b) 1985
47: In a diamond the carbon atoms are bonded by _____ covalent bonds.
- a) 1
- b) 2
- c) 3
- d) 4
d) 4
48: Concentrations of salt up to ________ are required to kill most species of bacteria.
- a) 10%
- b) 20%
- c) 30%
- d) 25%
b) 20%
49: Barometer was invented by____________.
- a) Bernoulli
- b) Toricell
- c) Galilio
- d) Robert Boyle
b) Toricell
50: During boiling, the temperature of a liquid:
- a) increases
- b) decreases
- c) remain constant
- d) none of these
Unit 6
51: Liquid solutes and solvents that are not soluble in each other are called:
- a) miscible
- b) immiscible
- c) sedimental
- d) none of these
b) inmicible
52: The process of settling particles at the bottom is called__________.
- a) suspension
- b) turbidity
- c) sedimentation
- d) none of above
c) sedimentation
53: Percentage is the number of parts of solute present in ________ parts of solution.
- a) 100
- b) 100%
- c) 50
- d) 50%
a) 100
54: If you mix half litre alcohol and half litre water, the total volume will be:
- a) 1 litre
- b) more than 1 litre
- c) less than 1 litre
- d) none of these
c) less than 1 litre
55: Ionic solutes dissolve well in:
- a) Polar solvent
- b) Non-polar solvent
- c) Both a and b
- d) None of these
a) Polar solvent
56: Solution which dissolves further amount of solute:
- a) Saturated
- b) Dilute
- c) Unsaturated
- d) Concentrated
a) Saturated
57: The example of gas in a liquid is:
- a) Humidity in water
- b) Mercury Amalgam
- c) Brass
- d) Carbonated Drinks
d) Carbonated Drinks
58: In Graphite, the carbon atoms are bonded by _________ covalent bond.
- a) 1
- b) 2
- c) 3
- d) 4
c) 3
59: Solubility of a solute does not depend upon:
- a) Rate of solvent
- b) Nature of solute
- c) Pressure
- d) Both a and b
a) Rate of Solvent
60: ___________ effect is a property that can be used to distinguish between a solution and colloid.
- a) Tyndall
- b) Boyle
- c) Charles
- d) Dispersion
a) Tyndall
Unit 7
61: Electrons are lost in ______________.
- a) Oxidation Reaction
- b) Reduction Reaction
- c) Redox Reaction
- d) Noe
a) Oxidation Reaction
62: Fireflies produce light through chemicals, which undergoes __________ reaction.
- a) Reduction
- b) Redox
- c) Oxidation
- d) None of these
c) Oxidation
- a) +14
- b) -14
- c) +7
- d) -7
c) +7
64: Which of the following is the best conductor?
- a) Gold
- b) Silver
- c) Iron
- d) Aluminium
a) Gold
65: ________ is the most abundant metal in the earth’s crust.
- a) Gold
- b) Silver
- c) Aluminium
- d) Mercury
c) Aluminium
66: The protective layer of Aluminium Oxide will deteriorate in an environment with PH:
- a) high
- b) low
- c) normal
- d) both a and b
d) both a and b
67: During electrolysis, the Chlorine produces out:
- a) Anode
- b) Cathode
- c) Both
- d) None of these
a) Anode
68: Silver atoms have_____ interaction together.
- a) Very strongg
- b) Strong
- c) Very weak
- d) Weak
d) Weak
69: The branch of chemistry that deals with the study of the relationship between electrical and chemical energy is called____________.
- a) Thermo Chemistry
- b) Physical Chemistry
- c) Biochemsitry
- d) Electrochemistry
d) Electrochemistry
70: Electricity is a form of:
- a) Energy
- b) Matter
- c) Mass
- d) None of these
a) Energy
Conclusion:
I hope the above Basic Chemistry MCQs with Answers will be helpful for your Chemistry online test preparation. If you need more advance Chemistry Multiple Choice Questions solved with answers, you can find them below.
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