List of practice Questions

A body of mass 5 kg hangs from a spring and oscillates with a time period of $2\pi$ seconds. If the ball is removed, the length of the spring will decrease by
If the radius of earth shrinks by one percent and its mass remaining the same, then acceleration due to gravity on the earth?s surface will
Which of the following does not have an open circulatory system?
The four elements that make up 99% of all elements found in a living system are
Zerevitinov�s determination of active hydrogen in a compound is based upon its reaction with
Decomposers are organisms that
The acid which has a peroxy linkage is
The formula for calcium chlorite is
Which of the following is known as fusion mixture?
Which of the following compounds will be most easily attacked by an electrophile ?
A rubber ball filled with water is having a small hole. This is used as the bob of a simple pendulum. Then period of such a pendulum
Which of the following does not have a tetrahedral structure?
In the photoelectron emission, the energy of the emitted electron is
The total number of valence electrons in 4.2 g of $N_3^{-}$ ion is [$N_A$ is the Avogadro's number)
Mycorrhiza exhibits the phenomenon of
The heart sound 'dup' is produced when
The type of joint between the human skull bones is called
The dimension of the modulus of rigidity, is
Non-symbiotic nitrogen fixers are
Common character at all vertebrates without exception is
Two examples in which the nitrogenous wastes are excreted from body in the form of uric acid are
A medium can carry a longitudinal wave because it has the property of
A bimetallic strip of brass and iron is heated. Then it bends such that iron is one the inside. This shows that
The coefficient of viscosity has following dimensions
In grass-deer-tiger food chain, grass biomass is one tonne. The tiger biomass shall be