The molecule which has the highest percentage of ionic character among the following is
The molecule which has the highest percentage of ionic character among the following is
The heat energy produced when the human body metabolises 1 gram of fat is
The heat energy produced when the human body metabolises 1 gram of fat is
The items amenable to detection by soft x-rays are
The items amenable to detection by soft x-rays are
The nucleus of an atom consists of
The nucleus of an atom consists of
The ionic radii of N3-, O2-, F- and Na+ follows the order
The ionic radii of N3-, O2-, F- and Na+ follows the order
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen 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 National Chemical Laboratory is situated in
The National Chemical Laboratory is situated in
Zone refining is used for the purification of
Zone refining is used for the purification of
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be
The most important ore of aluminium is
The most important ore of aluminium is
The graphite rods in the nuclear reactor
The graphite rods in the nuclear reactor
The main chemical constituent of clay 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 2nd orbit to 3rd orbit is
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is
The mineral containing both magnesium and calcium is
The mineral containing both magnesium and calcium is
The hottest part of the gas flame is known as
The hottest part of the gas flame is known as
The maximum number of covalent formed by nitrogen is
The maximum number of covalent formed by nitrogen is
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
The most electronegative element among the following is
The most electronegative element among the following is
The main buffer system of the human blood is
The main buffer system of the human blood is
The hydronium ion is
The hydronium ion is
The main active constituent of tea and coffee is
The main active constituent of tea and coffee is
The most abundant rare gas in the atmosphere is
The most abundant rare gas in the atmosphere is
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
The maximum number of isomers for an alkene with molecular formula C4H8 is
The maximum number of isomers for an alkene with molecular formula C4H8 is
The luster of a metal is due to
The luster of a metal is due to
What are the number of moles of CO2 which contains 16 g of oxygen?
What are the number of moles of CO2 which contains 16 g of oxygen?
The high reactivity of fluorine is due to
The high reactivity of fluorine is due to
The main use of salt in the diet is to
The main use of salt in the diet is to
The inert gases are ____ in water
The inert gases are ____ in water
The mass number of an atom is equal to
The mass number of an atom is equal to
The metal that is usually extracted from sea water is
The metal that is usually extracted from sea water is
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is
The metal does not give H2 on treatment with dilute HCL is
The metal does not give H2 on treatment with dilute HCL 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 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 iron ore magnetite consists of
The iron ore magnetite consists of
The method that cannot be used for removing permanent hardness of water is
The method that cannot be used for removing permanent hardness of water is
The metal used to recover copper from a solution of copper sulphate is
The metal used to recover copper from a solution of copper sulphate 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 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 oil used in the froth floatation process is
The oil used in the froth floatation process is
The mass number of a nucleus is
The mass number of a nucleus is
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
The major constituent of air is
The major constituent of air is
The material which can be deformed permanently by heat and pressure is called a
The material which can be deformed permanently by heat and pressure is called a
The first metal used by man was
The first metal used by man was
The Latin word formica means ant. The name formic acid is derived from this Latin word because
The Latin word formica means ant. The name formic acid is derived from this Latin word because
The octane number of zero is assigned to
The octane number of zero is assigned to
The molecular formula of phosphorous is
The molecular formula of phosphorous is
The mass of one Avogadro number of helium atom is
The mass of one Avogadro number of helium atom is
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
The metal that is used as a catalyst in the hydrogenation of oils is
The metal that is used as a catalyst in the hydrogenation of oils is
The most malleable metal is
The most malleable metal is
The hardest form of carbon is
The hardest form of carbon is
The number of waves in n x 10th Bohr's orbit are
The number of waves in n x 10th Bohr's orbit are
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
The most commonly used bleaching agent is
The most commonly used bleaching agent is
The monomer of polythene is
The monomer of polythene is
The most electropositive elements among the following is
The most electropositive elements among the following is
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
The most extensive, commercially useful source of thorium as monazite sand occurs in India at
The most extensive, commercially useful source of thorium as monazite sand occurs in India at
Ozone layer of atmosphere absorbs:
Ozone layer of atmosphere absorbs:
The molecules of which gas have highest speed?
The molecules of which gas have highest speed?
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 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 gas used in the manufacture of vanaspati from vegetable oil is
The gas used in the manufacture of vanaspati from vegetable oil is
The metallurgical process in which a metal is obtained in a fused state is called
The metallurgical process in which a metal is obtained in a fused state is called
The gas used for artificial ripening of green fruit is
The gas used for artificial ripening of green fruit is
The nucleus of a hydrogen atom consists of
The nucleus of a hydrogen atom consists of
The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in
The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in
Which of the following phenomenon is considered responsible for Global Warming?
Which of the following phenomenon is considered responsible for Global Warming?
The heat required to raise the temperature of body by 1 K is called
The heat required to raise the temperature of body by 1 K is called
The inexpensive and commonly used variety of glass is called soda glass. It is called so because
The inexpensive and commonly used variety of glass is called soda glass. It is called so because
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
The number of moles of solute present in 1 kg of a solvent is called its
The number of moles of solute present in 1 kg of a solvent is called its
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is
The nuclear particles which are assumed to hold the nucleons together are
The nuclear particles which are assumed to hold the nucleons together are
The ore which is found in abundance in India is
The ore which is found in abundance in India is
The number of electrons presents in H+ is
The number of electrons presents in H+ is
The inherited traits of an organism are controlled by
The inherited traits of an organism are controlled by
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is
The formula C6H5-CO-CH3 represents
The formula C6H5-CO-CH3 represents
