List of practice Questions

Two spheres made of same substance have diameters in the ratio 1 : 2. Their thermal capacities are in the ratio of:
The closing and opening of the leaves of Mimosa pudica is due to
A straight wire of diameter 0.5 mm carrying a current of 1 A is replaced by the another wire of 1 mm diameter carrying the same current. The strength of the magnetic field far away is
The current in the given circuit is
Which of the following form of sulphur can be prepared by pouring liquid sulphur into cold water?
The Lassaignes solution of an organic compound with nitrogen; sulphur and chlorine contains:
The boiling points of the following hydrides follow the order of
A vessel contains equal volumes of $ \text{S}{{\text{O}}_{\text{2}}} $ and $ \text{C}{{\text{H}}_{4}}. $ Through a small hole the gases effused into vacuum. After 200 seconds the total volume is reduced to half. What is the ratio of $ \text{S}{{\text{O}}_{\text{2}}} $ and $ \text{C}{{\text{H}}_{\text{4}}} $ remaining in the vessel?
The conjugate acid of $ \text{N}_{3}^{-} $ (Azide ion) is :
The dielectric constants of $ {{\text{H}}_{\text{2}}}\text{O} $ and $ {{\text{D}}_{\text{2}}}\text{O} $ are 82 and 80.5 respectively. Therefore, the solubility of NaCI in $ {{\text{D}}_{\text{2}}}\text{O} $ is ...... than in water:
Metals having $ \text{n}{{\text{s}}^{\text{1}}} $ the valence electronic configuration:

Energy transfer from one trophic level to another, in a food chain, is

Sympathetic neural system induces
The number of myonemes in muscle tails of epitheliomuscular cells:
The disease caused by a helminth parasite of man that has a gastropoda member as an intermediate host:
Rate of heart beat is determined by
Leech with setae is:
Cholecystokinin and duocrinin are secreted by
When ethyne is passed through dilute $ {{H}_{2}}S{{O}_{4}} $ containing $ {{H}_{g}}S{{O}_{4}}, $ it forms:
0 .15 g of a substance dissolved in 15 g of a solvent higher by 0.216$^\circ$C than that of the pure solvent. Find out the molecular weight of the substance. $(K_b\, for\, solvent \, is\, 2.16 ^\circ C)$
The oxidation number of phosphorus in pyrophosphoric acid is
Gammexane is
The plant, which bears clinging roots, is
Carbon dioxide acceptor in C3 plants is
Hybridoma cells are