List of practice Questions

Bacterial leaf blight of rice is caused by a species
Circular disc of mass 2 kg and radius 1 m is rotating about an axis perpendicular to its plane and passing through its centre of mass with a rotational kinetic energy of 8 J. The angular momentum in (J-s) is
Solubility product constant ( $K_{sp}$ )of salts of types $ MX_1, MX_ 2 \, and \, M_3 \, X $ at temperature -T are $ 4.0 \times 10^ { - 8 } , \, 3.2 \times 10^{ - 14 } $ and $ 2.7 \times 10^{ - 15 }$, respectively. Solubilities (mol dm$^{- 3}$ ) of the salts at temperature T" are in the order
Darwin's finches are a good example of
Cry endotoxins obtained from Bacillus thuringiensis are effective against
The maximum value of $\frac{Log \, x}{x} $ in $(2, \infty)$ is
Which one of the following items gives its correct total number?
The element with the lowest ionization potential is
An intrinsic semiconductor at $0\,K$ temperature behaves like
Dehydration of alcohol is an example of which type of reaction?
Which one of the following mono-enes does not exhibit geometric isomerism?
The moment of inertia of a circular ring of mass $1\,kg $ about an axis passing through its centre and perpendicular to its plane is $4\, kg-m^{2}$ . The diameter of the ring is
Hydroxamic acid test is employed to detect
If $g$ is the acceleration due to gravity on the surface of earth, its value at a height equal to double the radius of earth is
The general electronic configuration of the transition elements is
Chloramine- $ T $ is a
Cell reaction is spontaneous, when
Which one of the following species acts as both Bronsted acid and base ?
A complex compound in which the oxidation number of a metal is zero is
In the brown ring test, the brown colour of the ring is due to
The monomers of Buna-$S$ rubber are
The number of nodal planes present in $\sigma^* \, s$ antibonding orbitals is
Which metal has a greater tendency to form metal oxide ?
A compound is formed by elements $A$ and $B$. This crystallises in the cubic structure where the $A$ atoms are at the corners of the cube and $B$ atoms are at the body centers. The simplest formula of the compound is
When acetamide is treated with $ Br_2 $ and caustic soda, the product formed is