Chemistry (Engineering Entrance)

This option is correct as in molarity there is volume term which alters with respect to temperature, M=no. of moles of solute/volume of solution in litres. By increasing the temperature volume expands and molarity decreases.

This option is correct as chemisorptions is specific in nature.

This option is correct as with the help of catatyst the rate of reaction increase because it lowers the energy barriers for the reaction.

This is option is correct because it is a catalytic promoter. It acts as a promoter for iron catalyst in the manufacture of ammonia by Haber's process.

This option is correct as shape selective catalysis is catalysis by zeolite. The reaction taking place in zeolite depends on the size and shape of the reactant and product molecules as compared to those pores and cavities of zeolite, that is why it is called as shape selective catalysis.

This option is correct as molality does not changes with temperature as there is no volume term in the formula of molality, M = no. of moles of the solute/mass of solvent in kg.

This option is correct as the formation of micelles occurs only beyond a certain level and is called Kraft temperature.

This option is correct as there are 14 elements in actinoids series, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No and Lr

This option is correct as diamagnetic behaviour is shown by those subustances which contain fully filled orbitals. No unpaired electron is present, and this condition is fulfilled by the NaCl. This subustance is weakly repelled by external magnetic field.

THis option is correct as the subustance which neutralizes excess acid in the stomach and raises pH to an appropriate level is called antacids.

This option is correct as the outer electronic configuration of Cr is 3d⁵4S¹, and can exhibit  +1, +2, +3, +4, +5, +6 oxidation states.

This option is correct as ampicillin is the semi-synthetic modification of penicillin.

This is called narcotic analgesics drug and is used for relief of post operative pain, cardiac pain, pain in terminal cancer and child birth.

This option is correct as this is the semi-synthetic modification of penicillin not the derivative of barbituric acid.

This option is correct as paracetamol is 4-acetamidophenol.

This option is correct as this is non-narcotic drug used for reducing fever.

This is used as a substitute of aspirin as aspirin is suppose to be toxic to liver.

This option is correct as 0.2% solution of phenol acts as anticeptic whereas 1% solution acts as disinfectant.

This option is correct as this is a broad spectrum antibiotic.

This option is correct as dettol and savlon are disinfectants.

This option is correct as a low concentration of chlorine is used for the sterilization of water to make it fit for drinking purpose.

This option is correct as silver chloride contains Frenkel defect due to the small size of Ag+ ion.

This option is correct as novestrol is an antifertility drug used for the control of child birth.

This option is correct as barbituric acids and its derivatives such as veronal, luminal and seconal are used for hypnotrics.