List of practice Questions

The graphs below show the magnitude of the force on a particle as it moves along the positive $ X $ -axis from the origin to $ X - X_{1} $ . The force is parallel to the $ X $ -axis and conservative. The maximum magnitude $ F_{1} $ has the same value for all graphs. Rank the situations according to the change in the potential energy associated with the force, least (or most negative) to greatest (or most positive).
A man throws a ball of mass $ 3.0\, kg $ with a speed of $ 5.0 \,m/s $ . His hand is in contact with the ball for $ 0.2 \,s $ . If he throws $ 4 $ balls in $ 2 $ seconds, the average force exerted by him in $ 1 $ second is
Figure represents the position-time graph of a body of mass $ 4 \,kg $ . Impulse $ (kg\, ms^{-1}) $ imparted to the body at $ t = 0 $ is
A particle of mass $ m $ is moving with a constant velocity along a line parallel to the positive direction of $ X $ -axis. The magnitude of its angular momentum with respect to the origin
Structure anions of acids, $ HNO_{3}, H_{3}PO_{4} $ and $ H_{2}SO_{4} $ are, respectively
Products (X and Y) of the following reactions (I and II) are : I. $ \underset{\text{(Cold and dil.)}}{{2NaOH}}+ Cl_{2} \to Nacl+X+H_{2}O $ II. $ \underset{\text{(Hot and cone.)}}{{6NaOH}}+ 3Cl_{2} \to Nacl+Y+3H_{2}O $
The intermediate product $ (X) $ formed in the following reaction is $ B_{2}H_{6}+6NH_{3} \to 3X { ->[Heat] } 2B_{3}N_{3}H_{6}+12H_{2} $
Which of the following radioactive element is used in the treatment of cancer?
Which of the following complexes is optically active?
The crystal field splitting energy $ (CFSE) $ for $ [CoCl_{6}]^{4-} $ is about $ 18000 \, cm^{-1} $ What would be the $ CFSE $ value of $ [CoCl_{4}]^{2-} $ ?
Which of the following is most soluble in water?
Which of the following metal ions is expected to be coloured?
The best reducing agent among the following is
A compound $ C_{5}H_{10}O (A) $ forms a phenyl - hydrazone and gives negative Tollen's test and a positive Iodoform reaction. It also gives $ n $ -pentane on reduction. The compound $ (A) $ is
A bicyclist comes to a skidding stop in $10\, m$. During this process, the force on the bicycle due to the road is $200\, N$ and is directly opposed to the motion. The work done by the cycle on the road is
Due to atmospheric refraction effects, the day becomes longer by
A ball is thrown horizontally from a height of $ 100\, m $ with an initial speed of $ 15\,m \,s^{-1} $ . How far does it travel horizontally in the first $ 2 $ seconds ?
Which wave, or ray is produced due to decelerating or accelerating charged particles ?
An example of non-stoichiometric hydride is
The following reactions show the $ H_{2}O_{2} $ behaviour in I and II reactions as: I. $ PbS(s) + 4 H_{2}O_{2} (aq) \to PbSO_{4}(s) + 4H_{2}O(l) $ II. $ HOC1 + H_{2}O_{2} \to H_{3}O^{+} + Cl^{-} + O_{2} $
What will be the half-cell potential of a hydrogen electrode acting as an anode and dipped in a solution of $ pH = 2 $ ?
Which of the following groups of plants have underground stems?
Which of the following is correct for Lactose?
Which of the following is substitution reaction?
Which of the following is not aromatic heterocyclic?