CHEMICAL SCIENCE MCQ,S 9TH CLASS ENGLISH MEDIUM

CHEMISTRY 9TH CLASS ENGLISH MEDIUM 150 MCQ,S OF COMPLETE BOOK

Chemistry MCQ,s ninth category textbook

1. within the reaction Reaction between Zn and HCl the oxidant is.

a) Zn b) H+ c) CI- d) H2

2._________phosphorus is a smaller amount reactive.

a) Blue b) Pink c) Red d) White

3.The most common example of corrosion is:

a) Chemical decay b) Rusting of iron c) Rusting of Aluminum d) Rusting of Tin

4.Melting point of metallic element is:

a) 560°C b) 800°C c) 851°C d) 855°C

5.Transition components are:

a) All gases b) All metals c) All non-metals d) All metalloids

6.HCl is an efficient compound:

a) Polar covalent b) Non polar covalent c) Organic d) None of those

7.Solid ar hardship denser than gases.

a) 100 b) 1000 c) 10000 d) one hundred thousand

8.Density of water is .

a) 1.0 cm-3 b) 20 gcm-3 c) 1.0 gcm3 d) 20 gcm3

9.A bond combine in valence molecules typically has:

a) One lepton b) Two electron c) Three electron d) Four electron

10.Concentration answer those that has.

a) Large quantity of b) Large quantity of c) {small quantity|bit|touch} of d) Small 

amount of

dissolved solvent dissolve substance undissolved solvent undissolved solute

11.Which one in all the subsequent is separated by physical mean?

a) Mixture b) Element c) Compound d) Radical

12.The mass of nucleon is ___________times over electrons.

a) 1800 b) 1840 c) 1900 d) 1820

13.How many times liquids ar denser than gases?

a) 100 times b) one thousand times c) 10000 times d) one hundred thousand times

14.The tendency of I is:

a) 1.7 b) 2.7 c) 1 d) None of them

15.The mass of 1 molecule of water is?

a) eighteen amu b) 18 g c) 18 mg d) 18 metric weight unit

16.Conversation of Kelvin temperature into uranologist temperature and the other way around is allotted by:

a) (T) K = (T) °C + 273 b) (T) K = (T) °C - 273 c) (T)°C =(T) K x 273 d) K = T °C x 273

17. Which one in all the subsequent isn't Associate in Nursing amorphous solid?

a) Rubber b) Plastic c) Glass d) Glucose

18.Alcohol in water is Associate in Nursing example of solution?

a) Gas in solid b) Gas in liquid c) Liquid in liquid d) Gas in gas

19.Atomic number of metal is

a) 3 b) 5 c) 7 d) 9

20.If 10of alcohol is dissolved in one hundred g of water it's referred to as.

a) %w/w b) %w/v c) %v/w d) %v/v

21.How many states of matter?

a) 2 b) 3 c) 4 d) 5

22.Concentrated answer of Has color?

a) Dense purple b) Dense blue c) Dense pink d) Dense black

23. that one in all the subsequent doesn't have an effect on the boiling point?

a) Intermolecular forces b) External pressure c) Initial temperature of the liquid d) Nature of liquid

24.The distinction between electronegativity’s of atomic number 1 and element is:

a) 0.5 b) 1.0 c) one.5 d) 2

25.Who introduced temperature scale

.

a) Charles b) Lord kelvin c) Robert Boyle d) None of those

26.When saturated answer dilute it becomes.

a) concentrated answer b) Unsaturated c) Supersaturated solution d) focused solution

27.If __________ ar stronger molecules face issue in evaporation.

a) Dipole dipole interaction b) Inter molecules forces c) Van der Waals forces d) each b and c

28.Amorphous means:

a) Shape b) Shapeless c) Rubber d) Both a and b

29.Which of the subsequent compound has bend structure and polar in nature.

a) CCl4 b) CH4 c) CO2 d) H2S

30.When was protons were discovered?

a) 1882 b) 1884 c) 1886 d) 1888

31.The existence of a component in additional than one type in same physical state is named.

a) Density b) Allotropy c) Monoclinic d) Tetragonal

32.Which amount is named short amount.

a) First b) Second c) Third d) Fourth

33.Magnesium is used:

a) In electroplating b) As Basic oxide c) As Acidic oxide d) None of them

34.Which one may be a crystalline solid?

a) diamond b) glass c) plastic d) rubber

35.Which rays turn out glow on wall of discharge tube.

a) Cathode rays b) Canal rays c) X-rays d) P-rays

36.A bond shaped between 2 nonmetals is anticipated to be.

a) Ionic b) Metallic c) Covalent d) Co-ordinate valence

37.The freezing point of binary compound is:

a) 600° C b) 750° C c) 800° C d) 900° C

38.Solution depends upon.

a) temperature b) nature of substance,solvent c) water d) solubility

39.In liquid state ,molecules possess.

a) Potential energy b) Kinetic energy c) Nuclear energy d) None of those

40.Who studied the connection between volume and pressure of a R temperature:

a) Robert Boyle b) Charles c) Newland d) Mendeleev

41.The atomic radius of element is:

a) 66 pm b) seventy seven pm c) eighty eight pm d) 99 pm

42.Cathode rays carry:

a) Negative charge b) Positive charge c) Neutral d) None of those

43.Boiling purpose of Na is:

a) 880°C b) 883 ° C c) 889 ° C d) None of them

44.The ionization energy of metal is.

a) 519 KJmol -1 b) 520 KJmol -1 c) 521 KJmol -1 d) 522 KJmol -1

45.The number of moles of Carbon in four grams of coal is?

a) 0.33 moles b) 0.39 moles c) 0.25 moles d) 0.50 moles

46.Anode of Downs Cell is formed of.

a) seel b) Copper c) Zinc d) carbon

47.The amount of energy given out once Associate in Nursing lepton is additional to Associate in Nursing atom is called:

a) Lattice energy b) Ionization energy c) Electron affinity d) Electron gravity

48.The distance between the nuclei of 2 atom is:

a) 154pm b) 140pm c) 110pm d) 115pm

49.Which one is physical property:

a) Smell b) style and hardness c) Color d) All of them

50. Which one in all the subsequent isn't Associate in Nursing electrolytic cell?

a) Downs cell b) Galvanic cell c) Nelson's cell d) each (a) and (c)

51.Freezing point of Acetic acid is:

a)

12.6 °C

b)

14.6 °C

c)

16.6 °C

d)

18.6 °C

52.In our daily life a lot of facilities is provided by:

a)

Chemistry

b)

Physics

c)

Science

d)  Biology

53.The electronegativity of fluorine is:

a)

3

b)

4

c)  5

d)

none of these

54.Mixture has _______ composition.

a)

1

b)

NO

c)

3

d)

Variable

55.Boiling point of n-Octane is:

a)

116 °C

b)

126 °C

c)

136 °C

d)

146 °C

56.Cathode rays are also called:

a)

Electron

b)

Neutron

c)

Proton

d)

Photon

57. Which of the following shows variable valency?

a)

Ca

b)

Fe

c)  B

d)  I

58.Freezing point of n-Octane is:

a)

47 °C

b)

-47 °C

c)

57 °C

d)

-57 °C

59.In mirror industry which has greater importance?

a)

Gold

b)

Silver

c)

Platinum

d)

None of them

60.The thing that has mass and occupies space is called:

a)

Atom

b)

Molecule

c)

Matter

d)

Mixture

61.When amount of solute increase ______ also increase.

a)

molarity

b)

temperature

c)

concentration

d)

both a and b

62.The number of groups in periodic table is.

a)

8

b)

9

c)

18

d)

12

63.In Boyle's law, the value of “K” is same for the same amount of a given.

a)

Volume

b)

Product

c)  Gas

d)

Temperature

64.Gram atomic mass of hydrogen is:

a  1.008 g        b)     1.0080 a.m.u            c)          1.0087 a.m.u            d)           1.008 kg

65. Which one of the following is a liquid in solid solution.

a)

Sugar in water

b)

Butter

c)

Opal

d)  Fog

66.Spontaneous redox reaction produces a current in:

a)

Voltaic cell

b)

Electrolytic cell

c)  Galvanic cell

d)  Both a & c

67.The %age of Phosphorus in our body is:

a)

0.5%

b)

1.5%

c)

2.5%

d)

3.5%

68.Gold is not affected by:

a)

Temperature

b)

Pressure

c)  Atmosphere

d)  None of them

69.Rate of ________ depends upon the molecular mass of gases:

a)

Diffusion

b)

Pressure

c)  Effusion

d)  Compressibility

70.Along the period which one of the following decreases.

a)

Atomic radius

b)

Ionization energy

c)

Electron affinity

d)

Electronegativity

71.Mist in an example of a solution.

a)

Liquid in gas

b)

Gas in liquid

c)

Solid in liquid

d)  Gas in solid

72.The electronegativity of nitrogen is:

a)

2

b)

3

c)

4

d)

5

73. Which one of the following is an electron-deficient molecule.

a)

NH3

b)  BF3

c)  N2

d)  C

74.Chemistry also provides knowledge to improve:

a)

Health

b)  Environment

c)

Both (a) and (b)

d)  None of these

75. Which one is a weak electrolyte?

a)

Citric acid

b)  Carbonic acid

c)

Tartaric acid

d)

All of them

76. How many electrons can k-shell accommodate?

a)

3

b)

2

c)

4

d)

5

77.Bohr awarded Nobel prize in:

a)

1822

b)

1922

c)

1811

d)

1911

78.In our body the %age of Hydrogen is:

a)

05%

b)

10%

c)

20%

d)

30%

79.The the spectrum of an atom is.

a)

Line

b)  Continuous

c)

Both a and b

d)  None of these

80. Which of the following is not ionic compound.

a)

MgO

b)

KCl

c)

Ca(NO3)2

d)  Cs2

81.The relative density of magnesium is:

a)

1.72 gcm -3

b)

1.79 gcm -3

c)

1.74 gcm -3

d)

None of them

82.The nucleus is very_______

a)

Light

b)

Hard

c)

Big

d)  All of these

83.Group 17th belongs:

a)

Nobel gases

b)

Halogens

c)  Alkali metals

d)  None of these

84.Molar mass of Nitric acid is:

a)

63 A

b)

63 mg

c)

63 amu

d)

63 kg

85.In which cell spontaneous chemical reaction takes place?

a)

Electrolytic cell

b)

Galvanic cell

c)  Nelson's cell

d)

Downs cell

86.Which on is not produced during electrolysis of aqueous NaCl?

a)

Na+

b)

OH-

c)  H2O

d)

Cl-

87.The most ductile and malleable metal is?

a)

Iron

b)

Gold

c)

silicon

d)

lead

88.The electron affinity of chlorine is.

a)

-328 KJmol-1

b)

22 KJmol-1

c)

-349 KJmol-1

d)

-295 KJmol-1

89.Spontaneous chemical reaction take place in:

a)

Electrolytic cell

b)

Galvanic cell

c)  Nelson's cell

d)  Down's cell

90.Boiling point of magnesium is:

a)

1000° C

b)  1060

° C

c)  1090 ° C

d)  None of them

91.Density of iron is:

a)

78.6 gcm-3

b)

7.86 gcm-3

c)  0.786 gcm-3

d)

None of them

92.Boiling point of Acetic Acid is:

a)

110 °C

b)

118 °C

c)  130 °C

d)

140 °C

93. Which is a heterogeneous mixture?

a)

Milk

b)  Ink

c)

Sugar solution

d)  Milk of magnesia

94. Which of the following hydride is liquid at ordinary temperature.

a)

HCl

b)

H2S

c)

NaH

d)

H2O

95.The the melting point of magnesium:

a)

550°C

b)

650°C

c)

750°C

d)  None of them

96.The angular momentum of the electron is:

a)

mvr= nn/2π

b)  mvr=n/2π

c)

mvr=2nn/2π

d)

mvr=nh/2π

97.S.I unit of pressure is:

a)

Nm-2

b)

Nm

c)  Nm-1

d)

None of these

98. Who discovered neutron.

a)

Dalton

b)

Bohr

c)

Chadwick

d)

Newton

99. Which show negligible effect of temp on its solubility.

a)

KCl

b)

KNO3

c)

NaNO3

d)

NaCl

100.Mass of the neutron is:

a)

1.0073 a.m.u

b)  1.0080 a.m.u

c)

1.0087 a.m.u

d)

1.0097 a.m.u

101.Example of amorphous solid are.

a)

Diamond & sodium

b)

Rubber & chloride

c)  Plastic & rubber

d)

sodium & plastic

102. Which one of the following is not an electrolyte?

a)

Sugar solution

b)  H2SO4

c)

Lime solution

d)

NaCl solution

103.Modern periodic law is presented by:

a)

Dobereiner

b)

Newlands

c)

Mendeleev

d)

H.Moseley

104. Which gas or gases are essential for life?

a)

Oxygen

b)

Carbon dioxide

c)

Both a & b

d)

None of them

105.The value of planks constant.

a)	6.63x10-34 N	b)	6.63x10-34 j	c)		6.63x10-34 Js	d)	6.63x10-34 m
106.The the atomic radius of Na is:
a)	180 pm	b)	182 pm		c)	184 pm	d)	186 pm

107. Nelson's cell is used to prepare caustic soda along with gases. Which of the following gas is produced at the cathode.

a)	Cl2			b)	H2		c)	O3		d)	O2
108.The the atomic radius of N is:
a)	53 pm		b)		63 pm		c)	73 pm		d)	83 pm
109.Types of the electrochemical cell are.
a)	2		b)		3		c)	4		d)	5
110.The a total number of sharing electron in nitrogen gas is:
a)	2		b)		4		c)	6		d)	8
111.Galvanic the cell is also called:
a)	Nelson's cell			b)	Daniel cell	c)  Voltaic cell			d)	None of them
112.The the element that has the smallest atomic radius in the first group is.
a)	Li	b)  Na					c)	K	d)	Cs

113. Who put forward A  a)Rutherford              b)    John Dalton               c)  Newton           d)    Bohr

114. the most reactive metal is?

a)

Oxygen

b)  Gold

c)

Caesium

d)

Lithium

115. What is the SI unit of atomic radius.

a)

pm

b)

Nm

c)

mm

d)

um

116.The the simplest form of matter is.

a)

Solid state

b)  Gaseous state

c)

Liquid state

d)  Both a and b

117.Mass of proton in AMU is:

a)

1.0043

b)

1.0053

c)

1.0063

d)

1.0073

118. How many blocks are present in a periodic table?

a)

2

b)

4

c)

6

d)

8

119. Which is a non-electrolyte.

a)

HCl

b)  NaOH

c)

C6H6

d)  H2SO4

120.Transfer of electrons between atoms result in:

a)	Metallic bonding			b)  Ionic bonding			c)	Covalent bonding			d)  All of these
121.Symbol of hydronium ion is:
a)	H+	b)  OH-			c)  H2O				d)  H3O+
122.Melting point of sodium is:
a)	67°C		b)  77 ° C			c)		87°C		d)  97 ° C

123.The horizontal rows in the periodic table are called.

a)

Periods

b)

Groups

c)

Rows

d)  Blocks

124.Empirical the formula of benzene is_____

a)

CH4

b)  CH

c)

C6H6

d)  None of them

125.The atomic radii of Be is:

a)

103 pm

b)  113 pm

c)

152 pm

d)

None of them

126.Long form of periodic table constructed on the basis of.

a)

Atomic number

b)  Atomic mass

c)

Mendeleev's postulate

d)  None of these

127.%Age of Aluminium in the crust of the earth is:

a)

5.8 %

b)

6.8 %

c)

7.8 %

d)

10 %

128. Which one of the following is brittle?

a)

Sodium

b)

Aluminium

c)

Selenium

d)

Magnesium

129.The an element that has the smallest atomic radius in period is.

a)

F

b)  N

c)

Ne

d)

C

130.The density of ice at 0°C is:

a)

1.00 gcm-3

b)

1.5 gdm-1

c)

0.917 gcm-3

d)

1.4 gdm-3

131.Percentage is the unit of.

a)

Molarity

b)

Concentration

c)

Solubility

d)

None of these

132.The bond formed due to mutual sharing of electrons is called.

a)

Metalic bond

b)

Ionic bond

c)

Covalent bond

d)  None of these

133.Fog is an example of a solution of:

a)

Liquid in Gas

b)

Gas in liquid

c)

solid in solid

d)

solid in gas

134.Noble gases with the exception of helium contain_____electron in their valence shell.

a)

3

b)

5

c)

6

d)

8

135.Mendeleev's the periodic table was based on the

a)

Electronic configuration

b)

Atomic mass

c)

Atomic number

d)

Completion of subshell

136.When KNO3 added in water, the test tube.

a)

Cold

b)

Warm

c)

No change occur

d)  All

137.Human blood is the example of:

a)

Suspension

b)

Solution

c)

Colloid

d)  None of them

138.Who introduced periodic table.

a)

New lands

b)

Dobereiner

c)  Mendeleev

d)

Newton

139.The %age of Calcium in our body is:

a)

0.5%

b)

1.5%

c)

2.5%

d)

3.5%

140.Solid particles posses which one of the following motion?

a)

Linear

b)  Rotational

c)

vibrational

d)

Simple

141.The least conductor of heat is?

a)

Iron

b)

Gold

c)  Silver

d)

lead

142.The Vapour Pressure of a liquid increases with increase in:

a)

Pressure

b)

Temperature

c)

Intermolecular force

d)

None of these

143.The process of changing of a liquid into a gas phase is called.

a)

Freezing point

b)

Vapour pressure

c)

Effusion

d)

Evaporation

144.Amorphous solid do not have sharp .

a)

Freezing point

b)

Boiling point

c)

Melting point

d)  Both a and b

145.Fundamental particles present in nucleus are called:

a)

Atomic number

b)

Atomic mass

c)

Nucleons

d)  Both b and c

146.Industrial chemistry deals with the manufacturing of compounds______________:

a)

In the laboratory

b)

On micro scale

c)

On commericial scale

d)

On economic scale

147.The most abundant metal is?

a)

Platinum

b)

Gold

c)

Uranium

d)

Aluminium

148.Albumin and soap are example of

a)

Colloid solution

b)

Suspension

c)

solution

d)

both a and b

                        149.The name atom derived from Latin word atomos mean?

        a)  Divisible        b)        Indivisible         c)                   Both a and b          d)            None of these

150.To break intermolecular forces between one mole of liquid Hydrogen Chloride molecules which convert it into gas is:

a)

12 kJ

b)

13 kJ

c)

17 kJ

d)

19 kJ