Monday, 18 February 2019

Solved MCQs 10th Chemistry Chapter Wise Punjab Board Pakistan

All Punjab Board of Pakistan Chemistry Past years 10th Class Solved MCQs with Chapter wise for the students. Here i am sharing all of these important notes with the answers for the students. In this Chater wise MCQs quiz section you will study important notes and questions objective types for the study purpose. All MCQs of the Punjab Board examinations previous years MCQs sharing for the preparations of tests and exams.





Punjab Board 10th Chemistry Chapter 1 Chemical Equilibrium

Question 1: The li1ves of aquatic plants and animals are indirectly related to concentration of dissolved ------- in water ?
  1. nitrogen
  2. Hydrogen
  3. oxygen
  4. chlorine
C
Question 2: The value of equilibrium constant (Kc) depends only on ?
  1. density
  2. Temprature
  3. Pressure
  4. concentration
B
Question 3: At equilibrium state, when reaction ceases to proceed, it is called ?
  1. Equilibrium constant
  2. Dynamic equilibrium
  3. Simple equilibrium
  4. Static equilibrium
D
Question 4: An Equilibrium is achievable only in a ?
  1. Small system
  2. Big system
  3. Closed system
  4. Open system
C
Question 5: When the numbers of moles of both sides are equal in a reaction, then the unit of Kc will be ?
  1. mol dm³
  2. mol⁻² dm
  3. mol⁻² dm ⁶
  4. No unit
D
Question 6: Active mass is expressed as ?
  1. [ ]
  2. ( )
  3. { }
  4. ││
A
Question 7: What is the colour of hydrogen iodide in product ?
  1. Blue
  2. Colorless
  3. Yellow
  4. Purple
B
Question 8: Such reactions which can be made proceed in either direction depending upon the condition ?
  1. Simply reaction
  2. Irreversible reaction
  3. Reversible reaction
  4. Chain Reaction
C
Question 9: Law of Mass Action was put forward by ?
  1. Arrhenius
  2. G.N. Lewis
  3. Guldberg and Waage
  4. Lowry
C
Question 10: At dynamic equilibrium state ?
  1. Rate of forward reaction = Rate of reverse reaction
  2. Rate of forward reaction < Rate of reverse reaction
  3. Rate of forward reaction ≠ Rate of reverse reaction
  4. Rate of forward reaction > Rate of reverse reaction
A
Question 11: In irreversible reaction, dynamic equilibrium ?
  1. Never establishes
  2. Establishes before the completion of reaction
  3. Establishes readily
  4. Establishes after the completion of reaction
D
Question 12: For the general reaction, aA + bB <-----> cC + dD, the equilibrium constant expression is ?
  1. [C] c [D] d /[A] a [B]b
  2. [aA][bB]/[cC][dD]
  3. [A]a [B]b/[C]c[D]d
  4. [cC][dD]/[aA][bB]
A

Punjab Board 10th Chemistry Chapter 2 Acids, Bases, Salt

Question 1: Sum of pH and pOH of a solution is ?
  1. 16
  2. 18
  3. 14
  4. 7
C
Question 2: Acid used for cleaning metals, tanning and in printing industries, is ?
  1. CHI
  2. HNO₃
  3. CH₃COOH
  4. H₂SO₄
A
Question 3: Water is a ?
  1. non- electrolyte
  2. Strong electrolyte
  3. weak electrolyte
  4. neutral compound
C
Question 4: Which one is not a characteristic of an acid ?
  1. It reacts with base to form salt and water
  2. It turns red litmus blue
  3. Its aqueous solution conducts electric current
  4. It has sour taste
B
Question 5: All water soluble metallic oxides have characteristic of ?
  1. Basic
  2. Amphoteric
  3. Acidic
  4. Neutral
A
Question 6: Which gas is evolved when acids react with carbonates and bicarbonates ?
  1. Hydrogen chloride
  2. Carbon Dioxide
  3. Carbon monoxide
  4. Hydrogen
B
Question 7: Which acid is found in sour milk ?
  1. Butyric acid
  2. Citric acid
  3. Formic acid
  4. Lactic acid
D
Question 8: The product of any Lewis acid-base reaction is single specie called ?
  1. Molecular ion
  2. Free radical
  3. Adduct
  4. Conjugate
C
Question 9: Latin word ‘Acidus’ means ?
  1. Bitter
  2. Sweet
  3. Sour
  4. Salty
C
Question 10: Binary compound of oxygen such as CO₂ and SO₂ were named as acids by ?
  1. Sir Humphrey Davy
  2. Lavoisier
  3. Al-Jahiz
  4. Jabir Bin Hayan
B
Question 11: Which one of the following is a Lewis base ?
  1. HF₃
  2. H⁺
  3. NH₃
  4. Ag⁺
C
Question 12: Soda lime is a mixture of ?
  1. CaCI₂ and KOH
  2. CaO and Ca(OH)₂
  3. CaCI₂ and NaOH
  4. CaO and NaOH
D

Punjab Board 10th Chemistry Chapter 3 Organic Chemistry

Question 1: Aromatic compounds are given this name because of ?
  1. Slippery touch they have
  2. Smell they have
  3. Bitter taste they have
  4. Sour taste they have
B
Question 2: General formula of alcohols is ?
  1. ROH
  2. O││R – C – OH
  3. O││ R – C – R’
  4. RCHO
A
Question 3: Formula of acetaldehyde is ?
  1. O ││CH₃ – C – H
  2. CH₃CH₂OH
  3. O ││ H – C – H
  4. O ││CH₃ – C – OH
A
Question 4: Alkanes are also called ?
  1. Olefins
  2. cyclic compounds
  3. Paraffins
  4. aliphatic Compounds
C
Question 5: What is the percentage of carbon in Anthracite ?
  1. 90%
  2. 60%
  3. 70%
  4. 80%
A
Question 6: Which one of the following is a synthetic fiber ?
  1. Wool
  2. Nylon
  3. Silk
  4. Cotton
B
Question 7: Petroleum is refined by ?
  1. simple distillation
  2. fractional distillation
  3. Destructive distillation
  4. dry distillation
B
Question 8: Open chain compounds are also called ?
  1. Aliphatic compounds
  2. aromatic compounds
  3. alicyclic compounds
  4. hydrocarbons
A
Question 9: The black residue of the coal tar is called ?
  1. matte
  2. pitch
  3. Peat
  4. lignite
B
Question 10: Chemical formula of urea is ?
  1. NH₂CONH₂
  2. NH₄CN
  3. NH₄CNO
  4. NH₄CI
A
Question 11: Who put forward “the vital force theory” ?
  1. Jabir-Bin-Hayan
  2. Berzellius
  3. Wohler
  4. Kolbe
B
Question 12: Organic compounds contain ?
  1. Co-ordinate covalent
  2. Metallic bone
  3. Covalent bond
  4. Ionic bond
C

Punjab Board 10th Chemistry Chapter 4 Hydrocarbons

Question 1: Which one of the following is polymerized to form benzene ?
  1. ethyne
  2. methane
  3. Ethane
  4. ethene
A
Question 2: Hydrogenation of alkenes and alkynes may be carried out at room temperature, in the presence of catalyst ?
  1. Pt or Pd
  2. Ni
  3. Fe₂O₃
  4. Zn
A
Question 3: Which one of the following is gas at room temperature ?
  1. C₆H₁₄
  2. C₂H₆
  3. C₈H₁₈
  4. C₆H₆
B
Question 4: Hydrogenation of vegetable oil to convert it into Banaspatic ghee is carried out in the presence of catalyst ?
  1. Na – metal
  2. Ni-metal
  3. Zn-metal
  4. Fe₂O₃
B
Question 5: H/H – C – C /H ≡ C – H is the structural formula of ?
  1. dimethyl acetylene
  2. Propene
  3. Acetylene
  4. methyl acetylene
D
Question 6: Volatility of hydrocarbons decreases with ?
  1. Decrease of molecular mass
  2. Decrease of triple bonds
  3. Increase of double or triple bonds
  4. Increase of molecular mass
D
Question 7: Which one of these is used as an aesthesia ?
  1. Ethane
  2. Carbon black
  3. Methane
  4. Chloroform
D
Question 8: Olefin is a Lath word meaning ?
  1. most reactive
  2. less reactive
  3. Inert
  4. oil forming
D
Question 9: Ethane is prepared by heating a mixture of ethanol and excess of concentrated sulfuric acid at ?
  1. 400⁰C - 450⁰C
  2. 150⁰C
  3. 180⁰C
  4. 250⁰C - 300⁰C
C
Question 10: When bromine water is added to acetylene its red-brown colour is changed into ?
  1. Red
  2. green
  3. discharged
  4. violet
B
Question 11: Marsh gas is mostly ?
  1. Ethane
  2. Butane
  3. Methane
  4. Propane
C
Question 12: Which one of the following is used as a fumigant ?
  1. Ethly alcohol
  2. Diethyl Ether
  3. Ethylene Glycol
  4. Ethylene oxide
D

Punjab Board 10th Chemistry Chapter 5 Biochemistry

Question 1: Enzymes are chemically ?
  1. vitamins
  2. carbohydrates
  3. Proteins
  4. Lipids
C
Question 2: Which are responsible for transmitting genetic information from generation to generation ?
  1. Lipids
  2. Vitamins
  3. Nucleic acids
  4. Proteins
  5. >
C
Question 3: Which one of the following is non-reducing in nature ?
  1. Glucose
  2. Sucrose
  3. Fructose
  4. Starch
D
Question 4: Monosaccharide’s consist of ?
  1. 2 to 6 carbon atoms
  2. 4 to 10 carbon atoms
  3. 3 to 9 carbon atoms
  4. 10 to 15 carbon atoms
B
Question 5: Dextrose is a crystallized ?
  1. Sucrose
  2. Fructose
  3. lactose
  4. glucose
D
Question 6: Hypoglycemia results due to ?
  1. low sugar level in body
  2. low cholesterol level
  3. High sugar level in body
  4. High cholesterol level
A
Question 7: Which one is a pentahydroxy ketone ?
  1. fructose
  2. Sucrose
  3. lactose
  4. glucose
A
Question 8: Methyl butanoate smells like ?
  1. an apple
  2. a lemon
  3. an orange
  4. A pine apple
A
Question 9: Lactose and maltose are ?
  1. disaccharides
  2. Monosaccharide’s
  3. tetrasaccharides
  4. trisaccharides
A
Question 10: Which one of these protects us against the disease ?
  1. Proteins
  2. Lipids
  3. All of these
  4. Carbohydrates
A
Question 11: The general formula of carbohydrate is ?
  1. Cn(H₂O)n
  2. C₂n(H₂O)
  3. Cn(H₂O)₂n
  4. C₂n(H₂O)n
A
Question 12: Glucose and fructose are ?
  1. Trioses
  2. pentoses
  3. hexoses
  4. tetroses
C

Punjab Board 10th Chemistry Chapter 6 Atmosphere

Question 1: Mesosphere extends from 50 km to ?
  1. 60km
  2. 12km
  3. 85km
  4. 50km
C
Question 2: The major constituents of troposphere are ?
  1. Carbon dioxide and oxygen
  2. Nitrogen and oxygen
  3. Argon and oxygen
  4. Carbon dioxide and argon
B
Question 3: Ozone depletion (i.e. O₃ → O₂ + O) occurs in ?
  1. Troposphere
  2. Lower stratosphere
  3. upper stratosphere
  4. middle stratosphere
C
Question 4: How much amount of sunlight reaches up to earth and absorbed by it ?
  1. 26%
  2. 50%
  3. 32%
  4. 18%
B
Question 5: Which Gas acts like a glass wall of a green house ?
  1. N₂
  2. CO
  3. CO₂
  4. O₂
C
Question 6: Almost all aircraft's fly in ?
  1. Troposphere
  2. thermosphere
  3. stratosphere
  4. mesosphere
A
Question 7: A strange bitter smell noticed near photocopiers is of ?
  1. O₂
  2. O₃
  3. SO₂
  4. H₂S
B
Question 8: Percentage of nitrogen in atmosphere is ?
  1. 0.93%
  2. 78.09%
  3. 0.03%
  4. 20.94%
B
Question 9: In the troposphere (lowest layer), the temperature decreases from 17⁰C to ?
  1. -61⁰C
  2. -58⁰C
  3. -93⁰C
  4. -49⁰C
B
Question 10: Normal rain water is ?
  1. weakly basic
  2. strongly acidic
  3. Weakly acidic
  4. strongly basic
C
Question 11: Atmosphere is divided into ?
  1. 3 regions
  2. 4 regions
  3. 5 regions
  4. 6 regions
B
Question 12: Ozone is beneficial for us as it ?
  1. Absorbs ultraviolet radiations
  2. Absorbs air pollutants
  3. Absorbs infrared radiations
  4. Absorbs chlorofluorocarbons
A

Punjab Board 10th Chemistry Chapter 7 Water

Question 1: 1. Density of water at 4₀C is ?
  1. 0.976 gcm⁻ ³
  2. 0.956 gcm⁻ ³
  3. 1.1 gcm⁻ ³
  4. 1 gcm⁻ ³
D
Question 2: Hookworm is a parasite that infects the ?
  1. small intestine
  2. stomach
  3. Large intestine
  4. liver
A
Question 3: Water molecule has a structure ?
  1. tetrahedral
  2. Ionic
  3. Non-polar
  4. polar
D
Question 4: Mercury poisoning causes ?
  1. gastro
  2. high blood pressure
  3. Neurological damage
  4. kidney damage
C
Question 5: Which process is responsible for ascending of water in roots ?
  1. capillary action
  2. Evaporation
  3. transpiration
  4. condensation
A
Question 6: Freezing points of water is ?
  1. 0⁰C
  2. -58⁰C
  3. -4⁰C
  4. -3.6⁰C
A
Question 7: The percentage of water in human body is about ?
  1. 80%
  2. 50%
  3. 70%
  4. 60%
C
Question 8: Water becomes hard because of ?
  1. Ca⁺²
  2. SO₄⁻²
  3. Mg⁺²
  4. all of these
D
Question 9: Fertilizers are used to make up the deficiency of ?
  1. nitrogen and phosphorus
  2. hydrogen and Calcium
  3. iron and magnesium
  4. Oxygen and carbon
A
Question 10: The chemical used in Clark’s method is ?
  1. washing soda
  2. CaO
  3. sodium zeolite
  4. slaked lime (Ca(OH)₂)
D
Question 11: The water which produces good lather with soap is called ?
  1. hard water
  2. Soft water
  3. heavy water
  4. typical water
B
Question 12: The surface tension of water is ?
  1. moderate
  2. high
  3. Very low
  4. zero
B

Punjab Board 10th Chemistry Chapter 8 Chemical Industries

Question 1: Which one of the following is manufactured by Solvay’s process ?
  1. sulfuric acid
  2. urea
  3. washing soda
  4. Caustic soda
C
Question 2: When copper pyrite (CuFeS₂) is strongly heated in excess of air it converted into a mixture of ?
  1. Cu₂S + Cu₂O
  2. Cu₂O + FeS
  3. FeO + SO₂ + Cu₂S
  4. Cu₂S + FeS
D
Question 3: Blonde hair contains compounds of ?
  1. iron
  2. titanium
  3. Molybdenum
  4. copper
B
Question 4: In smelting process, a small amount of coke is required because ?
  1. If is highly exothermic process
  2. It is very slow process
  3. It is highly endothermic process
  4. It is very fast process
B
Question 5: In forth flotation process, the ore particles are preferentially wetter by ?
  1. petrol
  2. Water
  3. oil
  4. benzene
C
Question 6: Chemical formula of matte will ?
  1. Cu₂S.FeS
  2. FeS
  3. Cu₂O
  4. Cu₂S
A
Question 7: Catalyst used in Haber’s process is ?
  1. Ni
  2. Cu
  3. Fe
  4. Zn
C
Question 8: Chemical formula of copper glance is ?
  1. Cu₂O
  2. CuSO₄
  3. CuFeS₃
  4. Cu₂S
D
Question 9: Chalco-Pyrite is an ore of ?
  1. silver
  2. copper
  3. Iron
  4. aluminum
B
Question 10: Blister copper is pure about ?
  1. 98%
  2. 90%
  3. 80%
  4. 70%
A
Question 11: The process of removal of gangue from the ore is technically know as ?
  1. metallurgy
  2. Concentration
  3. refining
  4. purification process
B
Question 12: Manufacturing of urea involves ?
  1. 4 steps
  2. 2 steps
  3. 3 steps
  4. 5 steps
C




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