| 111. | What mixture is gun powder made of? |
A. nitrate of potassium and sodium | |
B. sulfate of potassium and magnesium | |
C. Charcoal, Sulfur and Potassium Nitrate | |
D. potassium sulfate and charcoal |
| 112. | In which one of the following pairs of metals is the lightest metal the heaviest respectively? |
A. lithium and mercury | |
B. lithium and osmium | |
C. aluminum and osmium | |
D. aluminum and mercury |
| 113. | What is the common name of ‘Chile Shore’? |
A. potassium nitrate | |
B. sodium nitrate | |
C. sodium nitrite | |
D. potassium nitrite |
| 114. | Which of the following are used as electrolytes in dry cell? |
A. ammonium chloride and zinc chloride | |
B. sodium and calcium chloride | |
C. magnesium and zinc chloride | |
D. ammonium and calcium chloride |
| 115. | Enriched uranium is |
A. shelled uranium rods | |
B. natural uranium in which the radioactive U²³⁵ isotope content has been artificially enhanced | |
C. mixture of natural uranium and thorium | |
D. Chromium Coated Uranium Rods |
| 116. | Which one of the following does not contain silver |
A. horn silver | |
B. german silver | |
C. ruby silver | |
D. lunar caustic |
| 117. | Which one of the following is called Yashad Pushpa |
A. zinc bromide | |
B. zinc nitrate | |
C. zinc oxide | |
D. zinc chloride |
| 118. | The commercial name of sodium bicarbonate is |
A. Baking soda | |
B. soda ash | |
C. soda lime | |
D. baking powder |
| 119. | Spice is a mixture, water, sand and |
A. slaked lime | |
B. slaked lime | |
C. limestone | |
D. of gypsum |
| 120. | Which of the following compound is used in photography |
A. aluminum hydroxide | |
B. silver bromide | |
C. potassium nitrate | |
D. Sodium chloride |