List of practice Questions

The surface temperature of the Sun which has maximum energy emission at $500 \,nm$ is $6000 \,K$. The temperature of a star which has maximum energy emission at $400\, nm$ will be

The resistance of an ammeter is $ 13 \Omega$ and its scale is graduated for a current upto $100$ amps. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto $750$ amperes by this meter. The value of shunt-resistance is

The helicotrema is the communicating link between the

The equation of a tangent to the parabola $y^2 = 8x$ is $y = x + 2$. The point on this line from which the other tangent to the parabola is perpendicular to the given tangent is

The artificial system of classification is based on

Select the true statement from the following. Nuclear force is

SA node is located in

Rods and cones are modified

Rh factor in man could be connected to species $\ldots\ldots$ of monkey

Release of second polar body from human egg nucleus occurs

Regeneration in Hydra will be faster if it is cut off from

Rayon is

Propene on hydroboration and oxidation produces

Pleiotropy is the term that refers to situation in which a gene influences more than one trait. Its example is given by

Phytoplankton are

Photosynthesis is maximum in

Sodium formate on heating gives

Hydrolysis ofphenyl isocyanide forms

Lucas reagent is

When dihydroxy acetone reacts with $HI0_4$, the product is/are

Freon used as refrigerant is

The product of following reaction is $2C{{H}_{3}}MgBr+C{{H}_{2}}O\xrightarrow{{}} $

Osphradium of Pila globosa is

Organ of Ruffini is sensitive to

Opening in the cork tissue which permits exchange of gases between atmosphere and internal tissues is called