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Class 9 Chemistry MCQS
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Chemistry – 9th Class
High-Scoring MCQs Bank (200 Questions)
1. What this world is made of?
2. Number of states of matter that we observe in everyday life.
3. Which branch investigate the behaviour of substance at atomic or molecular level?
4. The study of covalent compounds of carbon, hydrogen and their derivatives deals:
5. Identify the naturally occurring polymer.
6. Hazardous effects of shopping bags are studied in:
7. The man made polymer is:
8. Simplest form of matter is:
9. Types of mixture are:
10. Allotropic forms of oxygen are:
11. Which one of the following is NOT a homogeneous mixture?
12. Identify the nature of chocolate.
13. Which one of the following is NOT a crystalline form of carbon?
14. What is true about element?
15. The symbol of sodium element is.
16. Which element exists in the form of monoatomic molecule?
17. Identify incorrect statement about compound.
18. Which of the following is an impure substance:
19. A sample that is formed by simple mixing of their components without fixed ratio is:
20. A solution in which solute particles are invisible is called:
21. What statement about suspension is incorrect?
22. A mixture of chalk in water is an example of:
23. Starch solution is:
24. The solution which can dissolve more amount of solute called:
25. When the tiny visible particles of a substance are dispersed through a medium, the mixture is named as:
26. Colour of element sulphur is:
27. John Dalton put forward his atomic theory in:
28. How many times a proton is heavier than an electron?
29. When neutron was discovered?
30. How many protons are in ⁴/₂He atom?
31. How much charge carries a proton?
32. How much charge carries a neutron particle?
33. Who proposed the concept of orbits?
34. Fourth shell consist of subshell:
35. The formula used to calculate number of electrons in each shell is:
36. What information was obtained from discharge tube experiments?
37. What does keep the particles present in the nucleus intact?
38. How do electrons keep themselves away from the oppositely charged nucleus?
39. Fundamental particles of all types of matter are:
40. As whole an atom carries charge:
41. Atomic number of an element is represented by:
42. Number of protons in an atom is called:
43. Sum of protons and Neutrons in an atom is called:
44. Mass number is represented by:
45. An atom has mass number 16 and atomic number is 8. How many neutrons are in it?
46. Formula for calculations of neutrons in an atom is:
47. The mass of an atom of an element relative to the mass of light isotope of carbon taken as 12 is called:
48. 1 amu is equal to:
49. Atomic mass of sulphur is.
50. What will be the relative atomic mass of nitrogen given the abundances of its two isotopes, ¹⁴N and ¹⁵N are 99.64 and 0.35 respectively?
51. How many elements are in the valence shell of noble gases?
52. The ability of an atom to get two electrons in valence shell is called:
53. Which element is capable of forming all the three types of bonds; covalent, coordinate covalent and ionic?
54. Which of the following bonds is expected to be the weakest?
55. Electronic configuration of chlorine (Cl) is:
56. The chemical bond which is formed by mutual sharing of electrons is called:
57. Identify the compound that has double covalent bond.
58. Which of the following has polar covalent bond?
59. Example of single covalent bond is:
60. Identify the property of metals:
61. What is the most common oxidation state of alkali metals?
62. What is the nature of bonding in metals?
63. Metals are good conductor of heat and electricity due to:
64. Which metal has the lowest melting point?
65. Which among the following has a double covalent bond?
66. Metals have tendency to:
67. Which one of the following is more electrophoretic metal?
68. Identify the gas that is produced when aluminium reacts with mineral acids.
69. Metals forms ion:
70. Identify the most electronegative element of the periodic table.
71. Which one of the following has weakest force of attraction?
72. Melting and boiling points of a substance depends on:
73. The attractive force between the molecules of water is called:
74. Which one of the following contains Dipole – dipole forces?
75. Why is H₂O a liquid while H₂S is a gas?
76. O₃ is the chemical formula of:
77. Ionic compounds are represented by:
78. Chemical formula of methane natural gas is:
79. Which one of the following is NOT covalent compound?
80. Empirical formula of calcium fluoride is:
81. Which of the following is indicated by empirical formula?
82. The molecular formula of benzene is:
83. The formula of Aluminum nitride is:
84. Calcium carries charge:
85. Which is the correct formula of calcium phosphide?
86. The molecular formula of glucose is:
87. Empirical formula of benzene is CH and its molecular formula is:
88. Molecule and empirical formula of sand is:
89. Ca(SO₄)₂ is the formula of calcium sulphate. How many sulphur atoms are in it?
90. How many total atom are in Ca(OH)₂?
91. Structural formula of 2-hexene is… What will be its empirical formula?
92. 1 mole of water has number of water molecules:
93. Avogadro’s number was introduced by:
94. How many atoms are present in one gram of H₂O?
95. The quantity of a substance containing Avogadro’s number of particles (Nₐ) is called:
96. The mass of one mole of a substance is called:
97. A mole of H₂SO₄ contains molecules:
98. The substances which react to give a chemical change are called:
99. One mole of calcium carbonate is equal to:
100. Molar mass of C₆H₁₂O₆ is:
101. In which form the energy is stored in a molecule?
102. Which of the following best defines a system in thermodynamics?
103. The energy which is released when bond is formed and absorbed when it is broken is called:
104. A reaction in which heat is absorbed is called:
105. The total heat content of a body is called:
106. Under which conditions the standard enthalpy is measured?
107. Which of the following is a unit of enthalpy?
108. Which theory explains how reaction occurs based on collisions between particles?
109. Which of the following factors does not effects the rate of chemical reactions?
110. A catalyst does what to the activation energy of reactions?
111. In a chemical reaction the substance that is used up is called:
112. During glycolysis which molecule breaks?
113. During glycolysis one molecule of glucose splits into:
114. The primary storage form of glucose is:
115. In reversible reaction what does the double arrow (⇌) indicates?
116. Formation of ammonia in closed system is an example of:
117. Chemical formula of copper sulphate pentahydrate is:
118. Colour of copper sulphate pentahydrate is:
119. Colour of anhydrous CuSO₄ is:
120. The colour of NO₂ gas is:
121. When a reaction will become a reversible one?
122. The reaction in which products recombine to form reactants are called:
123. What happens with following reaction when pressure is increased? N₂ + 3H₂ ⇌ 2NH₃
124. What is true about reversible reaction?
125. Which of the following is brown?
126. The reversible reaction is represented by:
127. Dynamic equilibrium establishes when:
128. A closed system is essential for establishing:
129. An equilibrium is reached when:
130. Identify the oxide that is not basic in nature?
131. A natural source of tartaric acid is:
132. Which acid is not used as a food or mixed with food?
133. According to Arrhenius acid is a substance which dissociates in water and give:
134. According to Arrhenius base dissociate in water to give.
135. Example of arrhenius acid is:
136. Examples of weak bases are:
137. According to Bronsted concept acid.
138. The gas produced by reaction of acid and base is.
139. The formula of sodium carbonate is:
140. The formula of potassium carbonate is:
141. Salt and water produce when acid reacts with.
142. Which one of the following base is insoluble in water?
143. What do bases react with to form ammonia gas?
144. Which one of the following is the base of modern periodic table?
145. Horizontal row of the periodic table is called:
146. In which period and group will you place the element which is an important part of the solar cell?
147. Which element has the highest melting point?
148. 2nd and 3rd period called:
149. Number of elements in very long periods are:
150. Transition element belongs to groups:
151. Who discovered the atomic number?
152. What is trend in the reactivity of alkali metals?
153. What is the nature of group-II metal oxide?
154. Group of halogen family is:
155. Identify the element that is larger in size among the following:
156. The tendency of an element to lose electron is called:
157. Which is the softest metal?
158. Outmost shell electronic configuration of Halogens is:
159. Which oxide is the most basic oxide?
160. Which group elements are the most reactive elements?
161. All the halogens exist as:
162. The gain of electron is called:
163. Correct order of oxidizing power of halogens is:
164. Which one of the following is yellowish green gas?
165. The element present at the centre of the modern periodic table from group 3 to group 12 are called:
166. Which one of the following transition metal is used as catalyst for preparation of ammonia?
167. Hydrogenation of oil is carried out in the presence of:
168. Outermost shell electronic configuration of noble gases is:
169. Elements of group 18 are:
170. Identify the noble gas that has 2 electrons in their valence shell:
171. All noble gases are:
172. The branch of chemistry which deals with the study of chemicals and other metal pollutants in the environment is called:
173. Blanket of air around the Earth is called:
174. Percentage of nitrogen in atmosphere is:
175. Identify the major constituents of atmosphere:
176. The percentage of oxygen in atmosphere is:
177. The substances which cause air Pollution are called:
178. Concentration of pollutants is expressed in:
179. Indicate the source of sulphur which is responsible for the presence of oxides of sulphur in the atmosphere.
180. Why is smog not felt in summer?
181. Acid rain makes soil:
182. Which of the following is a greenhouse gas?
183. Chemical used to neutralized acidic soil is:
184. In which area there is a greater possibility of acid rain?
185. Which gases contribute towards the formation of acid rain?
186. Which of the following is acid rain?
187. The essential element present in organic compounds is:
188. Which one of the following is saturated compound?
189. The simplest alkane is:
190. Which other atom is almost always present along with carbon atom in all organic compounds?
191. Identify the parent hydrocarbon:
192. Which part of IUPAC system tells us about class of organic compound?
193. According to Bronsted-Lowry, an example of Base is:
194. Which one of the following does not react with chemical reagents like KMnO₄?
195. Elements of group 18 are:
196. The catalyst used for reduction of alkene and alkyne is:
197. The word paraffin’s mean:
198. Alkanes react with excess oxygen to produce:
199. Replacement of hydrogen of Alkane by an atom or a group of atoms are called:
200. Which product will be formed when ethyl bromide (CH₃CH₂Br) is treated with Zn/HCl?
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Important MCQs of Class 9
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