List of practice Questions

Let $I$ be the moment of inertia of a uniform square plate about an axis $AB$ that passes through its centre and is parallel to two of its sides. $CD$ is a line in the plane of the plate that passes through the centre of the plate and makes an angle $\theta$ with $AB$. The moment of inertia of the plate about the axis $CD$ is then equal to
The coefficient of restitution $e$, for a perfectly elastic collision is
The molecule that has linear structure is
When mercuric iodide is added to the aqueous solution of potassium iodide
A particle executes simple harmonic motion with a frequency f. The frequency with which its kinetic energy oscillates is
The IUPAC name of the compound $CH_2=CH-CH(CH_3)_2 $ is
The probability that at least one of the events $A$ and $B$ occurs is $0.6$. If $A$ and $B$ occur simultaneously with probability $0.2$, then $P (\bar A) +P(\bar B)$ is
Which of the following oxides of nitrogen is a coloured gas ?
Bromine can be liberated from potassium bromide solution by the action of
If two compounds have the same empirical formula but different molecular formulae, they must have
If $z_1$ and $z_2$ are two non-zero complex numbers such that $| z_1+ z_2| = | z_1| + | z_2|$ , then $arg (z_1 ) - arg (z_2)$ is equal to
Fluorine does not show positive oxidation states due to the absence of
During a negative beta decay
Atomic radii of fluorine and neon in Angstrom units are respectively given by
The brown ring complex compound is formulated as $[Fe (H_2 O)_5 (NO)^+] SO_4.$ The oxidation state of iron is
Hydrogen bonding is maximum in
A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at cathode and anode are respectively
Amongst the trihalides of nitrogen, which one is least basic?
Antibiotics are mostly obtained from
The half-life period of a radioactive element is 140 days. After 650 days, one gram of the element will reduce to
A tube closed at one end containing air produces fundamental note of frequency $512\, Hz$. If the tube is open at both the ends, the fundamental frequency will be
A reference frame attached to the earth
A molal solution is one that contains one mole of solute in
A molal solution is one that contains one mole of a solute in
Which one amongst the following pairs of ions cannot be separated by $H_2 S$ in dilute HCl ?