List of practice Questions

Which from the following complexes, the central metal ion does NOT obey the EAN rule?
(Atomic number = Pt = 78, Cu = 29, Zn = 30, Fe = 26)
What is the source of an alkane if its molar mass is 240 g mol$^{-1}$ and the percentage by mass of hydrogen is 15%?
The sum of oxidation states of all atoms in \(\text{Cr}_2\text{O}_7^{2-}\) ion is
Chromyl chloride converts methyl group to a chromium complex, which on acid hydrolysis gives corresponding aldehyde. This reaction is called
Which of the following artificial sweeteners contain chlorine in its molecular formula?
Which among the following is allylic secondary alcohol?
Which of the following reactions does NOT involve replacement of diazonium group?
If one 's', three 'p' and one 'd' atomic orbitals take part in hybridization, then number of hybrid orbitals formed are
Which among the following is a mineral of Sulphur?
An element with density 2.8 g cm$^{-3}$ forms FCC unit cell having edge length 4 × 10$^{-8}$ cm. Calculate molar mass of the element.
Primary nitroalkanes on boiling with hydrochloric acid undergo hydrolysis to form
How many moles of acetic acid are obtained in the reaction when one mole glucose is treated with excess acetic anhydride?
Which from the following methods is NOT used to preserve food?
What is the molecular formula of 3-bromopropene?
Which among the following is NOT a mineral of chlorine?
Light waves from two coherent sources arrive at two points on a screen with path difference of zero and \( \lambda / 2 \). The ratio of the intensities at the points is
What is the role of tuyères used in blast furnace for extraction of iron?
Which of the following compounds contain \(-\text{CO}-\text{NH}-\) linkage?
A copper wire of length \( L \) and diameter \( D \) is to be reshaped into another wire so as to have minimum resistance. For this we should
Ratio of centripetal acceleration for an electron revolving in 3rd orbit to 5th Bohr orbit of hydrogen atom is
A particle performs S.H.M. from the mean position. Its amplitude is \( A \) and total energy is \( E \). At a particular instant its kinetic energy is \( \frac{3E}{4} \). The displacement of the particle at that instant is
A capillary tube is vertically immersed in water, water rises up to a height \( h_1 \). When the whole arrangement is taken to a depth \( d \) in a mine, the water level rises up to height \( h_2 \). The ratio \( \frac{h_1}{h_2} \) is (R = radius of earth)
A transverse wave is travelling on a string with velocity \( V \). The extension in the string is \( x \). If the string is extended by 50%, the speed of the wave along the string will be nearly (Hooke's law is obeyed)
The kinetic energy acquired by a body of mass \( M \) in travelling a certain distance \( d \), starting from rest, under the action of constant force is
The magnitude of magnetic fields at a distance \( r \) from the centre of a short bar magnet, in longitudinal position to transverse position is in the ratio