List of practice Questions

The correct order of acidic nature of the following alkynes is:
I. \( \text{C}_2\text{H}_2 \)
II. \( (\text{CH}_3)_2\text{C}_2 \)
III. \( (\text{CH}_3)\text{C}_2\text{H} \)
The product ‘Q’ of the following reactions is:
product ‘Q’ of the following reactions
The anions (A) of \( \text{C}_p\text{A}_q \) molecule form an fcc lattice. Cations (C) are positioned at the body center and half of the edge centers. The formula of the molecule is:
Elements A and B have FCC and BCC structures respectively with unit cell edge length \( a = 3 \, \text{Å} \).
The number of atoms in 210 g of A = number of atoms in 594 g of B.
If density of A is \( 7 \, \text{g/cm}^3 \), what is the density of B?
Which of the following is not a disproportionation reaction?
Which of the following equations are correct?
(A) U =H−PV
(B) G =H−TS
(C) U =q+W
Identify the correct statements from the following:
The formula of Calgon is \( \text{Na}_6(\text{PO}_3)_6 \)
(II) Exhausted permutit is regenerated by aqueous KCl solution.
(III) Calcium stearate is soluble in water.
(IV) In ice crystals, each oxygen is surrounded by four oxygen atoms.
The compound that is used in smoke screens is:
Maximum number of electrons possible with spin quantum number \(+\frac{1}{2}\) and principal quantum number \(n = 4\) in an atom is:
In which of the following, the elements Al, B, Mg, and K are correctly arranged in the increasing order of their metallic character?
The number of valence electrons present in an element with atomic number 117 is:
The combination of which of the following gives an ionic compound with maximum covalent character?
The tetra-atomic molecules/ions with different shapes are:
Find the false statement for ideal gases:
Which of the following reactions is not a disproportionation reaction?
A plane electromagnetic wave of frequency \(50 \, \text{MHz}\) travels in free space. If the average energy densities in the electric and magnetic fields are \(K_E\) and \(K_B\), then:
The correct order of electromagnetic waves with increasing frequency is:
The ratio of radii of 3rd and 6th Bohr’s orbits in a hydrogen atom is:
The frequency of light emitted during the \(n = 4 \to n = 2\) transition in hydrogen is \( \frac{3}{7} \) times that of which transition in Li atom?
The values of \( Y \) and \( Z \) in the given logic circuit are:
values of Y and Z in the given logic circuit
The frequency suitable beyond the horizon communication using sky wave is:
The quantities that don’t change when a resistor connected to a battery is heated due to the current are:
A battery with a \(12\,\text{V}\) emf has an initial charge of \(80\,\text{A·h}\). If the potential across the terminals remains constant until it is fully discharged, how long can the battery deliver energy at a rate of \(120\,\text{W}\)?
An isosceles triangular current-carrying loop is kept perpendicularly in a uniform magnetic field \( \vec{B}_0 \) as shown in the figure. The force on the loop due to magnetic field is:
isosceles triangular current-carrying loop
A charged particle is moving in a uniform magnetic field and enters a lead layer, losing half of its kinetic energy. The radius of curvature of its path becomes: