Basic Concepts of Physical Chemistry Solved MCQs Quiz Test

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Solved Chemistry MCQs of Basic Concepts of Physical Chemistry

Basic Concepts of Physical Chemistry Solved MCQs Quiz Test

Q.1: The study of various laws and principles governing chemical and physical changes is known as?

1. Analytical chemistry
2. Inorganic chemistry
3. Organic Chemistry
4. Physical Chemistry

D

Q.2: Which of the following is not element?

1. Silica
2. Graphite
3. Diamond
4. Plastic sulphur

A

Q.3: The most abundant element in earth crust is?

1. Oxygen
2. Nitrogen
3. Iron
4. Aluminium

A

Q.4: Which of the following statements is correct?

1. Air is a homogenous mixture
2. A mixture is always heterogenous
3. All elements are heterogenous
4. Compounds made up of a number of elements are heterogeneous

A

Q.5: Which of the following processes results in a chemical change?

1. Heating of a platinum rod
2. Heating of iron rod
3. Sublimation of ammonium chloride
4. Dissolving of common salt in water

B

Q.6: Which of the following is not a mixture?

1. Gasoline
2. Distilled water
3. Iodized table salt
4. Sugar dissolved in water

B

Q.7: Which of the following statements false?

1. Milk is a homogenous mixture
2. Homogenous mixtures are called solutions
3. An element of a substance contains only one kind of atoms
4. A compound can be decomposed into its constituents

A

Q.8: A mixture of sand and ammonium chloride can be separated by?

1. Chromatography
2. Gravity separation
3. Fractional crystallization
4. Sublimation

D

Q.9: Calcium sulphate containing sodium sulphate as impurity is separated by?

1. Filteration and crystallization
2. Chromatography
3. Fractional crystallization
4. Sublimation

A

Q.10: Which of the following is not a compound?

1. Ozone
2. Marble
3. Carborundum
4. Quick lime

A

Q.11: Which of the following is incorrect with respect to SI units?

1. Density in kg/m3
2. Force in Newton
3. Pressure in pascal
4. Amount of substance in mol/L

D

Q.12: Which of the following is correct?

1. 1dm3= 10³ cm³
2. 1L =10 dm³
3. 1dm³= 10 L
4. 1L = lm³

A

Q.13: The relationship between pecometer (pm)find nanometer (nm)is?

1. 1 pm = 10 nm
2. 1 nm =10 pm
3. 1 pm = 100 nm
4. 1 nm = 100 pm

D

Q.14: The atmospheric pressure of one torr is equal to?

1. 1cm of Hg
2. 1 atm pressure
3. lm of Hg
   (D} 1 mm of Hg

D

Q.15: Which of the following liquid mixture cannot be separated by simple distillation?

1. Benzene and toluene
2. Water and ethanol
3. Acetone and methanol
4. Ethanol and methanol

B

Q.16: The percentage of hydrogen water and hydrogen peroxide is 11.1 and 5.9 % respectively. These figures illustrate?

1. Avogadro’s law
2. Law of conservation of mass
3. Law of definite proportion
4. Law of multiple proportion

D

Q.17: The balancing of chemical equation is based on?

1. Avogadro’s law
2. Law of conservation of mass
3. Law of definite proportion
4. Law of multiple proportion

B

Q.18: Oxygen combines with two isotopes of carbon (C¹² and C¹⁴)to form two samples of carbon dioxide. The data illustrates?

1. Law of reciprocal proportions
2. Law of conservation of mass
3. Law of definite proportion
4. None of these

D

Q.19: Which of the following pairs of compound illustrate law of multiple proportions?

1. C₈OH, KOH
2. D₂O and H₂O
3. Benzene and ethane
4. KI and KC1

C

Q.20: The atomic mass of an element is?

1. The actual mass of one atom of the element
   
2. The average relative mass of different atoms of the element
3. Much different from the number of the element
4. The relative mass of an atom of the element

B

Q.21: The isotopes of chlorine with mass number 35 and 37 exist in the ratio of?

1. 1:1
2. 3:1
3. 1:3
4. 3:2

B

Q.22: The correct value of Avogadro’s number is?

1. 6.02342 x 10²¹
2. 6.024 x 10²²
3. 6.02252 x 10²³
4. 6.6230 x 10^-34

C

Q.23: One mole of the nitrogen gas is the volume of?

1. One litre of nitrogen at STP
2. 22.4 litres of nitrogen at STP
3. 14 litres of nitrogen at STP
4. 7 litres of nitrogen at STP

D

Q.24: Which of the following has maximum mass?

1. 0.1 gram atom of nitrogen
2. 0.1 mole of ammonia
3. 6.022 x 10²² molecules of He gas
4. 12 cm³ of carbon dioxide

D

Q.25: Total number of atoms present in 64g of SO2 is?

1. 6.02 x 10²²
2. 6.02 x 10²³
3. 64 x 6.02 x 10²³
4. 64 x 6.02 x 10²²

B

Q.26: The mass of One a.m.u is approximately?

1. 1.0 g
2. 2.0 g
3. 1.66 x 10²⁴ g
4. 1.66 x 10^-24 g

D

Q.27: Which of the following represents 1 gram molecule of a substance?

1. 6.02 x I0 24 molecules of ammonia
2. 4 gram of He
3. 40 gram of C_aO
4. 127 gram of iodine

D

Q.28: Equal volumes of different gases at any definite temperature and pressure have?

1. Equal masses
2. Equal atoms
3. Equal molecules
4. Equal densities

C

Q.29: The equivalent mass of KMnO₄ in acidic medium is (K = 39, Mn = 55, 0 = 16)?

1. 158
2. 15.8
3. 31.6
4. 3.16

C

Q.30: The weights of two elements which combine with one another are in the ratio of their?

1. Atomic mass
2. Molecular mass
3. Equivalent mole
4. Gram mole

C

Q.31: The number of moles of SO₂ in 6.4 gram is?

1. 0.1
2. 0.2
3. 0.01
4. 0.02

A

Q.32: The empirical formula of oxalic acid is?

1. CHO
2. CH₂O
3. CHO₂
4. CH₂O₂

C

Q.33: A sample in the ionization chamber of mass spectrometer is ionized by?

1. Electrons
2. Protons
3. Neutrons
4. Nucleus

A

Q.34: Which of the following will form single peak in mass spectrograph?

1. Iodine
2. Arsenic
3. Fluorine
4. All of these

D

Q.35: Which one of the following contains maximum number of molecules?

1. 16 gram methane
2. 16 gram water
3. 16 gram oxygen
4. 16 gram sulphur dioxide

A

Q.36: Actual yield of a chemical reaction is always less than the theoretical yield because of?

1. Reversible reactions
2. Slid reactions
3. By product formation
4. All of these

D

Q.37: The number of peaks obtained in mass spectrometry shows?

1. Charge on isotopes
2. Mass of isotopes
3. Number of isotopes
4. Relative abundance of isotope

C

Q.38: Which of the following substances is used as CO₂ absorber in combustion analysis?

1. Lime water
2. Dilute NaOH
3. 50% KOH
4. Mg(OH)₂

C

Q.39: Which of the following properties is always in whole numbers?

1. Atomic mass
2. Atomic radius
3. Atomic volume
4. Atomic number

D

Q.40: The technique used to separate insoluble particles from liquid is:?

1. Sublimation
2. Crystallization
3. Filtration
4. Solvent extraction

D

Q.41: The process controlled by distribution law is?

1. Sublimation
2. Crystallization
3. Filtration
4. Solvent extraction

D

Q.42: Mixture of NaCl and chloride is separated by?

1. Sublimation
2. Crystallization
3. Filtration
4. Solvent extraction

A

Q.43: Which of the following substance is used as decolorizing agent?

1. Silica gel
2. Animal charcoal
3. Asbestos
4. Sulphuric acid

B

Q.44: Which of the foilowing is not Used drying agent in desiccators?

1. NaCl solution
2. CaCl₂
3. P₂O₅
4. Silica gel

A

Q.45: The separation of miscible liquids by heating due to difference in boiling points is called?

1. Vaporization
2. Distillation
3. Sublimation
4. Condensation

B

Q.46: The component which shows maximum affinity towards stationary state will have?

1. Large Rf value
2. Small Rf value
3. Intermediate Rf value
4. None of the above

B

Q.47: Which of the following is not locating reagent?

1. CS2
2. Rubeanic acid
3. H₂S
4. Ninhydrin

A

Q.48: Safe and most reliable method of drying crystals is:?

1. Furnace
2. Desiccator
3. Oven
4. None of the above

B

Q.49: The most suitable locating reagent for amino acids on paper chromatography is?

1. Sulphuric acid
2. Rubeanic acid
3. H₂S
4. Ninhydrin

A

Q.50: The solid which is left over the filter paper is called?

1. Filtrate
2. Residue
3. Crystals
4. Aliquot

B