List of practice Questions

Order of energy of orbitals
The classification of elements which is based on atomic number is
Which of the following electronic configuration violating Hund's rule ?
The mode of nutrition in Paramoecium ____ .
The fluids secreted from seminal vesicles, prostate gland and Cowper's gland collectively called seminal plasma. The seminal plasma along with sperm is called _____ .
The phrase Omnis cellula e cellula, or cells arise from pre-existing cells was proposed by
Growth of a Plant in response to a light stimulus is known as
Transfer of pollen grains from anther to stigma of the same flower is called ____ .
A potentiometer with a cell of 2.4 volts and internal resistance of 2 Ω maintains potential drop across the resistance wire AB of length 2 m and resistance 10 Ω. A standard cell that maintains a constant EMF of ‘V’ volt with an internal resistance of 0.2 gives a balance point at 1.6 M length of the wire. The value of EMF of the second (standard) cell(V) is:
If A is a skew symmetric matrx, then \(A^ {2021}\) is
Which of the following artificial sweeteners can be used in soft drinks only?
The equilibrium constant, \(K_C\) for \(3C_2H_2(g) \rightleftharpoons C_6H_6(g)\) is 4 L\(^2\)mol\(^{-2}\). If the equilibrium concentration of benzene is 0.5 mol/L, then what is the value of concentration of ethylene?
A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is :
(Atomic mass : Cl = 35.5 amu, H = 1 amu)

Which among the following reactions does NOT form alkyl halides?

Let L1 be the line joining (0, 0, 0) and (1, 2, 3) and L2 be the line joining (2, 3, 4) and (3, 4, 5). The point of intersection of L1 and L2 is
Which property of CO2 makes it biologically and geo-Chemically important?
A DC ammeter and a hot wire ammeter are connected to a circuit in series. When a direct current is passed through the circuit, the DC ammeter shows 6A. When AC current flows through the circuit, what is the average reading in DC ammeter and the AC ammeter, if DC and AC currents flow simultaneously through the circuit?
A bullet of mass \( m \) hits a mass \( M \) and gets embedded in it. If the block rises to a height \( h \) as a result of this collision, the velocity of the bullet before collision is
A particle of mass \( m \) is moving in a horizontal circle of radius \( r \) under a centripetal force given by \( \left( \frac{-K}{r^2} \right) \), where \( K \) is a constant. Then
The height at which the acceleration due to gravity becomes \( \frac{g}{16} \) (where \( g \) is the acceleration due to gravity on the surface of the earth) in terms of \( R \), if \( R \) is the radius of the Earth.
Which of the following series spectrum of hydrogen atom lies in ultraviolet region?
Speed of electromagnetic wave in a medium having relative permittivity \( \epsilon_r \) and relative permeability \( \mu_r \) is (speed of light in air, \( c = 3 \times 10^8 \, \text{m/s} \))
The wavelength of the second line of the Balmer series is 486.4 nm. What is the wavelength of the first line of Lyman series?
A bat emitting an ultrasonic wave of frequency \( 4.5 \times 10^4 \, \text{Hz} \) at speed of \( 6 \, \text{m/s} \) between two parallel walls. The two frequencies heard by the bat will be
A disc of moment of inertia 4 kg \( \text{m}^2 \) revolving with 16 rad/s is placed on another disc of moment of inertia 8 kg \( \text{m}^2 \) revolving with 4 rad/s. The angular frequency of the composite disc is