List of practice Questions

Which of the following relation between average life period (ℓ) and the disintegration constant (λ) and the disintegration constant (λ) of the radio element is correct
Identify the correct statement regarding a spontaneous process
Osmotic pressure is a colligative property because it
The relationship between equilibrium constant K and free energy change of the process is given by
Which of the following salt will have same value of Vant Hoff's factor, 'i' as that of K4[Fe(CN)6] ?
The least metallic of the S block element is
Which of the following species has the maximum bond order?
0.0025 has _________ significant figure
A neutral atom (Atomic number > 1) consists of:
The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is:
The molecular formula of dithionic acid is
The total number of electrons that can be accomdated in the fourth principal energy level is____________
The values of four quantum numbers of valence electron of an element are n = 4, l = 0, m = 0 and \(s=+\frac{1}{2}\). The element is :
Which one of the following sets of elements has the strongest tendency to form negative ions in gaseous state?
Electromagnetic waves transport
If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately ____
The de Broglie wavelengths of electron waves in two orbits is 3:5. The ratio of kinetic energy of electrons will be
The pyknometric density of sodium chloride crystal is 2.165x 103 kg m-3 while its X-ray density is 2.178 x103 kg m-3 . The fraction of the unoccupied sites in sodium chloride crysstal is
The sharp melting point of a crystalline solid is due to
What is the net charge if a certain semiconductor losses 4 valence electrons?
Which of the following is atypical element?
According to theory of relative mass of an object is
If a 46 gm golf ball has velocity 36 m/s and an electron with velocity 107 m/s. Which of these two show wave character?
Plutonium decays with half time 24000 yr. If plutonium is stored after 72000 yr, the fraction of it that remains ______
Special theory of relativity treats problem involving