Chemistry-Objective Related Question Answers
1126. The principle of atom bomb?
Uncontrolled chain reaction of nuclear fission
1127. Who put forward a principle relating to the equilibrium system?
Le Chatellier
1128. Radiocarbon dating was developed by?
Willard F. Libby
1129. Radioactivity is measured by using the instrument?
Geiger counter
1130. Isotope used for the treatment of Hyperthyroidism?
Iodine 131
1131. The Radioactive element present in Pitch Blende?
Uranium
1132. Half life period of Carbon 14?
5730 years
1133. Half life period of thorium 234?
24 days
1134. Rays which travels in the speed of light?
Gamma rays
1135. The steady state from which no spontaneous change takes place is called?
Equilibrium
1136. The chemical reactions which never go to completion are called?
Reversible reactions
1137. The reaction in which the forward and backward reactions occur simultaneously is called?
Reversible reaction
1138. Those reactions in which the products cannot react and give back the original reactants are called?
Irreversible reactions
1139. The temperature most suited for conducting an industrial process involving a reversible reactions; most conveniently and profitably is called?
Optimum temperature
1140. The reaction in which product molecules react and give back the original reactants is called?
Backward reaction
1141. A system of reacting substances from which neither the reactants nor the products are taken away or added to is called?
Closed system
1142. At what temperature water has the maximum density?
4°C
1143. A rain coat is made of?
Polychloroethene
1144. The absence of cobalt in minute quantities in human body causes?
Pernicious anaemia
1145. Which material is used in display devices; such as digital watches?
Liquid crystal
1146. Which drug is present in cola drinks?
Caffeine
1147. What is the modern standard for relative atomic mass?
Carbon isotope with mass number 12
1148. What happens when an electron moves nearer to the nucleus of the atom?
Its energy decreases
1149. What is molarity?
Number of moles of solute in one litre of the solution.
1150. What do you mean by a buffer solution?
Solution which can maintain constant PH
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions
Question ANSWER With Solution