List of top Questions asked in AIIMS- 1998

Which of the following is the main cause of late discovery of neutron?
Which one of the following is used to make ??on-stick??cookware?
Which one of the following shows maximum paramagnetic character?
Woollen clothes keep the body warm, because wool
The reaction, $ {Benzene + methyl \,halide ->[Anhy.AlCl_3]Toluene,}$ is known as
The rain drops are spherical in shape due to
The product obtained when acetic acid is treated with phosphorus trichloride, is
The boiling point of water $\left(100^{\circ} C \right)$ becomes $100.52^{\circ} C$, if $3$ grams of a non-volatile solute is dissolved in $200 \,ml$ of water. The moleular weight of solute is (if $K _{ b }$ for water is $=0.6\, K / m$ )
The best material for the core of a transformer, is
Pollination by snail and slug is known as
Longitudinal strain is possible in
Light appears to travel in a straight line, because
In an endothermic reaction, the value of change in enthalpy $(\Delta H)$ is
Immediately after ovulation, the mammalian egg is covered by a membrane known as
If a person with a spring balance and a body hanging from it goes up and up in an aeroplane, then the reading of the weight of the body as indicated by the spring balance, will
Hess??law is applicable for the determination of heat of
Heat travels through vaccum by
Gravitational mass is proportional to gravitational
Galapagos islands are associated with the name of
Baeyer?? reagent is used in the laboratory for
The ratio $C_p /C_v$ for a diatomic gas is more than that for a monotomic gas. The molecules of a monotomic gas have more degree of freedom than those of a diatomic gas.
Newton?? rings are formed in the reflected system. When the space between the lens and the glass plate is filled with a liquid of refractive index greater than that of glass, the central spot of the pattern is bright. This is because the reflections in these cases will be from a denser to a rarer medium and the two interfering rays are reflected under similar conditions.
Lysosomes help in the process of photorespiration. Lysosomes have acidic enzymes.
In series LCR circuit, the resonance occurs at one frequency only. At resonance the inductive reactance is equal and opposite to the capacitive reactance.
Both chlorine and sulphur dioxide act as bleaching agents. Chlorine bleaches by vigorous oxidation, while sulphur dioxide bleaches by mild reduction.