List of practice Questions

When the temperature of a gas filled in a closed vessel is increased by $ 1\,^{\circ}C$, its pressure increases by $0.4$ percent. The initial temperature of gas was
When the universal gas constant (R) is divided by Avogadro's number $(N_o)$,their ratio is called
When two halogens are attached to same carbon atom, it is known as :
When two infinitely long parallel wires separated by a distance of 1 m, each carry a current of 3 ampere, the force in newton/ metre length experienced by each will be, (give $\mu_0=4\pi \times 10^{-7}$ S.I.Units) .
When the condition are dry, a grass leaf curls inward to minimise water loss due to presence of
When the load on a wire is increased from $3 \,kg \,wt$ to $5 \,kg \,wt$ the elongation increases from $0.61\, mm$ to $ 1.02\, mm$. The work done during the extension of the wire is
When sodium reacts with excess of oxygen oxidation number of oxygen changes from
When stamens are adnate to tepals it is known as
When the angle of projection is $75^\circ$ a ball falls 10 m short of the. target When the angle of projection is $45^\circ$ another balls falls 10 m , a head of target If both an projected from the same point with the same speed then maximum height reached in the second case is.
When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to
When propanal reacts with $2$-methylpropanal in presence of $NaOH$, four different products are formed. The reaction is known as
When $SO_2$ is passed through acidified $K_2Cr_2O_7$ solution
When ozone reacts with phosphorus the oxidation state of P changes from
When plaster of Paris comes in contact with water it sets into a hard mass. The composition of the hard mass is
When primary amine is heated with $CS_2$ in the it gives isothiocyanate. This reaction is called
When $MnO_2$ is fused with $KOH$ and $O_2$, what is the product formed and its colour? $MnO_2 + KOH + O_2 \to ? + H_2O$
When molten zinc is converted into solid state, it acquires HCP structure. The number of nearest neighbours will be
When nitric acid is heated with $P_2O_5$, the oxide nitrogen that is produced is
When ordinary light is made incident on a quarter wave plate, the emergent light is
When light travels from air to glass, the property which does not change is
When methanol is sprinkled over hot copper plate the smell would be
When methyl isocyanide is heated with sulphur the product formed is
When $KMnO_4$ is added to oxalic acid, the decolourisation is slow in the beginning but becomes instantaneous after sometime because
When excess of carbon dioxide is passed through lime water, the milkiness first formed disappears due to
When forces $F_1,F_2,F_3$ are acting on a particle of mass m such that $F_2$ and $ F_3 $ are mutually perpendicular, then the particle remains stationary, If the force $F_1$ is now removed Then acceleration of the particle is.