General Science

Q1501.Which of the following statement about molecular structure is correct?

Q1502.Polymer of Natural Rubber is

Q1503.When soggy biscuits are kept inside the fridge for sometime they become crisp because

Q1504.With reference to technologies for solar power production, consider the following statements. 1. ‘Photovoltaics’ is a technology that generates electricity by direct conversion of light into electricity, while ‘Solar Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is further used in electricity generation process. 2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Currect (DC). 3. India has manufacturing base for Solar Thermal Technology, but not for Photovoltaics. Which of the statements given above is/are correct?

Q1505.The atomic nucleus was discovered by

Q1506.Which of the following is not a Natural polymer?

Q1507.When a glass rod is placed in steam, its length increases but its width

Q1508.Consider the following statements. In a nuclear reactor, self-sustained chain reaction is possible because 1. More neutrons are released in each of the fission reactions. 2. The neutrons immediately take park in the fission process. 3. The fast neutrons are slowed down by graphite. 4. Every neutron released in the fission reaction initiates further fission. Which of these statements are correct?

Q1509.In atom, neutron was discovered by

Q1510.Bakelite is formed by the condensation of

Q1511.Consider the figures of a metal ball and a metal ring given below. The metal ball can just pass through the hole of a metal ring formed out of a strip. When the ball is heated it gets stuck. But when the metal is heated

Q1512.Consider the following statements about nuclear fusion reactors. 1. They work on the principle of fission of heavy nuclei. 2. They usually have Tokamak design. 3. They operate at very high temperature. Of these

Q1513.Which of the following is not a subatomic particle?

Q1514.Which gas is obtained from plastic?

Q1515.Strips of two metals A and B are firmly jointed together as shown in the figure. On heating, A expands more than B does. If this jointed strip is heated, then it will appear as

Q1516.To meet its rapidly growing energy demand some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over uranium? 1. Thorium is far more abundant in nature than uranium. 2. On the basis of per unit mass of mined mineral, thorium can generate more energy compared to natural uranium. 3. Thorium produces less harmful waste compared to uranium. Which of the statement(s) given above is/are correct?

Q1517.Which one of the following pairs constitutes particle-antiparticle pair?

Q1518.Which one of the following polymer is widely used for making bulletproof materials?

Q1519.In winter you touch a log of wood and a rod of iron, you will feed rod of iron is colder because

Q1520.Consider the following statements. 1. The Nuclear Security Summits are periodically held under the aegis of the United Nations. 2. The International Panel on Fissile Materials is an organ of International Atomic Energy Agency. Which of the statements given above is/are correct?