Explore topic-wise MCQs in General Knowledge.

The nucleus of an atom consists of

The high reactivity of fluorine is due to

The method that cannot be used for removing permanent hardness of water is

The main chemical constituent of clay is

The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2^nd orbit to 3^rd orbit is

The major constituent of air is

The mineral containing both magnesium and calcium is

The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called

The main use of salt in the diet is to

The monomer of polythene is

The luster of a metal is due to

The nucleus of a hydrogen atom consists of

The heat required to raise the temperature of body by 1 K is called

The nuclear particles which are assumed to hold the nucleons together are

The gas used for artificial ripening of green fruit is

The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

The graphite rods in the nuclear reactor

Zone refining is used for the purification of

The molecule which has the highest percentage of ionic character among the following is

The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is

The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

The most commonly used bleaching agent is

The most malleable metal is

The most abundant rare gas in the atmosphere is

The Latin word formica means ant. The name formic acid is derived from this Latin word because

The oil used in the froth floatation process is

The ore which is found in abundance in India is

The mass of P₄O₁₀ that will be obtained from the reaction of 1.33 gram of P₄ and 5.07 of oxygen is

The inherited traits of an organism are controlled by

The heat energy produced when the human body metabolises 1 gram of fat is

What are the number of moles of CO2 which contains 16 g of oxygen?

The octane number of zero is assigned to

The metal that is used as a catalyst in the hydrogenation of oils is

The most electropositive elements among the following is

The items amenable to detection by soft x-rays are

The material which can be deformed permanently by heat and pressure is called a

The inexpensive and commonly used variety of glass is called soda glass. It is called so because

The gas used in the manufacture of vanaspati from vegetable oil is

The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

The maximum number of covalent formed by nitrogen is

The formula C₆H₅-CO-CH₃ represents

The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

The inert gases are ____ in water

The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

The metal does not give H₂ on treatment with dilute HCL is

The number of g-molecule of oxygen in 6.02 x 10²⁴CO molecules is

The most extensive, commercially useful source of thorium as monazite sand occurs in India at

The main active constituent of tea and coffee is

The maximum number of isomers for an alkene with molecular formula C₄H₈ is