MDCAT Chemistry S-Block Elements Test Online

1. Sodium metal cannot be stored under

2. Causticisation process is used for the preparation of

3. Amongst the metals Be, Mg, Ca and Sr of group 2 of the periodic table, the least ionic chloride would be formed by

4. H₃BO₃ is a

5. Ordinary window glass is a mixture of

6. Mica and bauxite are ores of

7. Metallic luster exhibited by Na can be explained by

8. Which halide has highest melting point?

9. The oxides of beryllium are

10. The element having highest electronegativity among the following is

11. Choose the element which does not belong to group II A of the periodic table

12. Ammonia may be prepared by heating ammonium chloride with

13. Which of the following mineral does not contain Al?

14. Which of the following is most dense?

15. Which of the following alkali metal hydroxides is the strongest base?

16. The formula of calcium cyanamide is

17. The principle constituent of pyrex glass is

18. Which one is formula of borax?

19. Which of the following statements is not true about potash alum?

20. Galena is an ore of

21. Portland cement is manufactured by using

22. Boric acid cannot be used

23. The reactivity of the alkali metal sodium with water, is made use of

24. Al is more reactive than Fe but Al is less easily corroded than Fe because

25. Setting of cement is an

26. The metal which is used in thermite process because of its activity is

27. Which of the following is different from the other three oxides?

28. Alkali and alkaline earth metals show increasing trend down the group in

29. Which one of the following substances conducts electricity by the movement of ions?

30. Special features of borate glass is that it is

31. The order of alkali metals is

32. When excess of SnCl₂ is added to a solution of HgCl₂, a white precipitate turning to grey is obtained. This grey colour is due to the formation of

33. Which is formula of orthoboric acid?

34. Bleaching powder is a compound having a formula

35. Which of the following in rain water is responsible for weathering of rocks?

36. Because of its ability to combine with both oxygen and nitrogen aluminum metal is used

37. Which metal is protected by a layer of its own oxide?

38. Which of the following is not a use of silicon?

39. Main process for the manufacture of Na₃CO₃ is

40. Aluminum oxide is

41. In the manufacture of cement which of the following is used?

42. Gypsum is applied to the soil as a source of

43. Choose the number of group of periodic table to which alkali metals belong to

44. Magnesium keeps on burning in

45. Which of the following properties is not true for an alkali metal?

46. Alkali earth metals have two electrons outermost

47. The chief are of aluminum is

48. Aluminum can jam radar due to

49. The solubility of aluminum hydroxide in sodium hydroxide solution is due to formation of

50. The element having least value of heat of hydration is

51. The formula of china clay is

52. Metals belonging to the same group in the periodic table are

53. Aluminum reacts with caustic soda to form

54. Which of the following is most abundant in the earth’s crust?

55. NaNO₃ decomposes on heating at high temperature to give

56. A pseudo solid is

57. Which is the most amphoteric?

58. The word alkali means

59. Red lead is

60. Alkaline earth metals have higher densities, melting and boiling points than alkali metals because of

61. Which element is used in thermite process due to its reactivity?

62. Leblanc process is employed in the manufacture of

63. Which is the weakest reducing agent?

64. Silicon is found in nature in the form of

65. Which of the following is monovalent?

66. Dolomite has the composition

67. White lead is

68. Down’s cell is used to prepare

69. The elements which belong to group IIIA are called

70. Born is soil has been considered micronutrient for

71. CO2 is gas while SiO2 is solid at room temperature.

72. Which of the following compounds has the lowest anion to cation size ratio?

73. Which of the following imparts violet colouration to the non-luminous flame of Bunsen burner?

74. The substance used as a smoke screen in warfare is

75. A combustible gas is liberated when caustic soda solution is heated with

76. Which one of the following gives white precipitate with aqueous BaCl₂?

77. Potassium is kept in

78. Which one is not an element of III A group?

79. Which electronic configuration corresponds to an element of group IIIA?

80. The chloride of an element A gives a neutral solution in water. In the periodic table, the element A belongs to

81. Choose the compound which decomposes on heating similar to LiNO₃

82. Aluminorthermy used for on the spot welding of large iron structure is based upon the fact that

83. Chrome yellow has a formula

84. Boric acid (H₃BO₃) reacts with NaOH to give a salt.

85. The halide which is not hydrolyzed is

86. With the increase in atomic weights, melting points of the alkali metals

87. Which element is present in excess in skeletal material?

88. Chile saltpeter has the chemical formula

89. The process of aluminum extraction is called

90. Which compound will show the highest lattice energy?

91. Nitrates of which elements give same products

92. AlCl₃ exist as dimmer because

93. One of the following does not form oxide on heating

94. One of the outstanding features of boron is its ability to form

95. The element having least value of ionization energy among the following elements is

96. The oxides of born and silicon are

97. Which one does not belong to alkaline earth metal?

98. Which of the following is a Lewis acid?

99. Which of the most basic of the following?

100. Which of the following is a component of ruby?

101. The formula of Nitre is

102. Which is the formula of Chili Salt Peter?

103. Bleaching action of bleaching powder is due to the liberation of

104. Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When carbon dioxide is bubbled through A, it turns cloudy. What is the chemical formula of A?

105. Graphite is a good conductor of electricity. The reason is that

106. Among the following oxides, the one which is most basic is

107. Calcium cyananmide on treatment with steam under pressure gives NH₃ and

108. Which of the following gases burns with a blue flame?

109. Plaster of Paris hardens by

110. Substance which is found in dried up lakes of Tibet and California is

111. The wire in the flash bulbs is made up of

112. Alum is not used

113. What is true about reactivity of aluminum?

114. Anodizing of Al is said when

115. BF₃ acts as acid according to the concept of

116. Microcosmic salt is

117. Sodium reacts with water more vigorously than lithium because

118. Plaster of Paris is a hydrate of

119. Choose the correct statement

120. Chile Salt peter is

121. Cesium oxide will be

122. The most abundant element in III A group in earth crust is?

123. The chemical composition of white lead is

124. Which is the chemical formula of zircon?

125. Point out one of the following which shows moderate electrical conductivity:

126. Washing soda has formula

127. In which of the following elements + 1 oxidation state is more stable than +3

128. Choose the gas among the following which turns line water milky:

129. The alkali metal that reacts with nitrogen directly to form nitride is

130. The aqueous solution of potash alum is

131. Borax is a white crystalline solid and it is

132. What is true about solubility of orthoboric acid?

133. Which one of the following sulphate is not soluble in water?

134. Alkali metal hydroxides are stable to heat except

135. The common mineral of alkali metal sodium is borax which has formula.

136. The elements having highest melting point is

137. Setting of Plaster of Paris involves

138. Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?

139. The elements which are very abundant I earth are

140. Which one of the following has the lowest boiling point?

141. Solid CO₂ (dry ice) has a structure just like

142. Which is the chemical formula of mica?

143. Which of the following conceivable structures for CCl₄ will have a zero dipole moment?

144. Which of the following sulphates is not soluble in water?

145. Sodium conducts electricity because

146. The formula of sodium meta borate is

147. Which is most abundant alkaline metal in earth crust?

148. In diaphragm cell, hydrogen is discharged by

149. The chemical formula of bauxite is

150. What is true about physical state of borax?

151. Silicon is an important constituent of

152. Which of the following is most abundant alkali metal in combined state in nature?

153. First ionization potential of alkaline earth metal is greater than alkali metals because

154. The purification method of bauxite containing iron oxide as impurity is known as

155. Keeping in view the comparison of alkali metals with alkaline earth metals, the alkali metals have