The area of a triangle is 24 square cm. If one side of it is 4 cm, what will be the height of the triangle?

Read the passage carefully and choose the best answer to each question out of the four alternatives.
The problem of water pollution by pesticides can be understood only in context, as part of the world to which it belongs- the pollution of the total environment of making. The pollution entering our waterways comes from many sources, radioactive wastes from reactors, laboratories, and hospitals; fallout from nuclear explosions; domestic wastes from cities and towns; chemical wastes from factories. To these is added a new kind of fallout the chemical sprays applied to crop lands and gardens, forests and fields. Many of the chemical agents in this alarming melange initiate and augment the harmful effects of radiation, and within the group of chemicals themselves there are sinister and little- understood interactions, transformations, and summations of effect.
Even since the chemists began to manufacture substances that nature never invented, the problems of water purification have become complex and the danger to user of water has increased. As we have seen, the production of these synthetic chemicals in large volume begin in the 1940’s. It has now reached such proportion that an appalling deluge of chemical pollution is daily poured into the nation’s waterways. When inextricably mixed with domestic and other wastes discharged into the same water, these chemicals sometimes defy detection by the methods in ordinary use by purification plants. Most of them are so complex that they cannot be identified. In rivers, a really incredible variety of pollutants combine to produce deposits that sanitary engineers can only despairingly refer to as “gunk”.

All the following words mean ‘chemical’ except

Cabinet is collectively accountable in India?

A bag contains three types of coins 1 rupee-coins, 50p-coins and 25 p-coins totaling 175 coins. If the total value of the coins of each kind be the same the total amount in the beg is: 

Who has recently become the President of the Indian branch of the International Road Federation (IRF)?

Which of the following is the closest layer to the Earth's surface in which all weather occurs?

Which of the following statements is/are CORRECT with respect to Draft Information Technology (Intermediary Guidelines and Digital Media Ethics Code) Rules, 2021, proposed in 2022?
 A. Online games will have to register with a self-regulatory body, and only games cleared by the body will be allowed to legally operate in India.
 B. Online gaming companies will not be allowed to engage in betting on the outcome of games, the proposed rules say.
 C. According to the rules, there could be more than one self-regulatory body.

Thomas Cup is associated with which one of the following sports?