List of practice Questions

The polymer used in making gaskets and non-stick coating utensils is
The structure of Buna-S polymer is
Which of the following is a natural polymer?
During Vulcanization of raw rubber, the chemical added to it is
In galvanised iron
Identify the incorrect statement about the corrosion
The type of functional group associated with cation exchange resin is
A sample of water is known to contain $Mg(HCO_{3})_{2} = 7.3$ mg/L, $Ca(HCO_{3})_{2} = 8.1$ mg/L and $27.2$ mg/L of $CaSO_{4}$. The total hardness associated with water sample (in ppm) in equivalents of $CaCO_{3}$ is
The exhausted anion-exchange resin is regenerated with
Which of the following is a weak electrolyte?
The wrong statement regarding Galvanic cell is
Electrolysis of an aqueous solution of $Na_{2}SO_{4}$ between Pt electrodes liberate a gas X at anode and gas Y at cathode. X and Y respectively are}
According to Arrhenius theory of acids and bases, which of the following is an example of Arrhenius base?
100 mL of 0.1M $HCl$ and 100 mL of 0.05 M $H_{2}SO_{4}$ are mixed and the solution is diluted to 2.0 L by adding water. The pH of the resulting solution is
Identify the pair of gases which have same number of molecules at S.T.P?
Which of the following has highest equivalent weight? (Given: At.wt $H=1, C=12, O=16, S=32, Na=23, Ca=40$)
12.6 g of oxalic acid, $H_{2}C_{2}O_{4} \cdot 2H_{2}O$ (M.wt 126) is present in 1500 mL of solution. The normality of that solution is
Which one of the following statements is not correct?
In which of the following, the number of bonding electrons and non-bonding electrons are in 3:2 ratio?
The four quantum numbers for the electron in the outermost orbital of potassium ($Z=19$) are
The angular momentum of an electron in an orbit $X$ of hydrogen atom is $\frac{2h}{\pi}$. Maximum number of orbitals possible in $X$ is
The pair of orbitals with electron density maximum along the axes is
In a superconducting ring, a persistent current has been flowing without decay for years. This is possible because:
In Optical Fiber communication, the signal is transmitted in the form of:
In a photoelectric experiment, the stopping potential for incident light of wavelength 4000 Å is 2 V. If the wavelength is changed to 3000 Å, the new stopping potential will be approximately: