List of top Chemistry Questions

x g of methane was burnt completely in the presence of oxygen. The liberated gases were passed into a solution containing 370 g of Ca(OH)$_2$. The weight of white precipitate obtained was 500 g. What is the value of x (in g)? (Given : C = 12; H = 1; Ca = 40; O = 16 u)
If one litre of an ideal gas at a pressure of 20 atm expands isothermally and reversibly to a final volume of 'X' L by absorbing 92.12 L.atm heat, 'X' (in L) is
The following data is obtained for one mole of a gas. The gas behaves as an ideal gas in the pressure range (in bar)
gas behaves as an ideal gas
The number of extensive and intensive properties in the following list is respectively: Mass, temperature, pressure, enthalpy, heat capacity, internal energy, density
The ion with smallest radius among the following is
Match the following
hybridisation
The energy (in J) released when an excited electron of 5$^{\text{th}}$ orbit of hydrogen atom returns to its ground state is
In which of the following, orbitals are correctly arranged in the increasing order of their energies?
The correct order of the metallic nature of the following elements is
What are 'X' and 'Y' in the following reaction?
conc.naoh
The sequence of reagents required to convert aniline to benzene nitrile are
Which of the following reagents will convert isobutyraldehyde to the corresponding acid?
Correct statements with respect to morphine (X) and Veronal (Y) are
A) Both X and Y are sleep producing agents
B) X is hypnotic and Y is analgesic
C) X is analgesic and Y is hypnotic
D) X is non-narcotic analgesic and Y is antidepressant
Chlorocyclohexane is
What are 'X' and 'Y' respectively in the following reaction sequence?
styrene
Which of the following hormones modulate inflammatory reactions?
Which of the following are fibrous proteins? Keratin, Insulin, Myosin, Albumin
IUPAC name of [Pt(NH$_3$)$_2$Cl(NH$_2$CH$_3$)]Cl is
Which of the polymer is used in the controlled release of drug?
Match the following
2.0 g of activated charcoal is added to 100 mL of 0.5 M acetic acid (molar mass 60 g mol\(^{-1}\)), shaken well and filtered. The concentration of solution is reduced to 0.4 M. How many grams of acetic acid is adsorbed on charcoal per gram?
Arrange the oxides CrO, Cr2O3 and CrO3 in the decreasing order of acidic strength
This equation represents the preparation of gold sol by \[ 2 \, \text{AuCl}_3 + 3 \, \text{CHO} + 3 \, \text{H}_2 \text{O} \rightarrow 2 \, \text{Au} + 3 \, \text{HCOOH} + 6 \, \text{HCl} \]
Identify the correct statements from the following
I. Brass is an alloy of copper and nickel
II. Bronze is an alloy of copper and zinc
III. German silver is an alloy of copper, zinc and nickel
IV. Brass is an alloy of copper and zinc
The formula of nickel oxide is Ni\(_{98}\)O\(_{100}\). What is the approximate percentage of Ni\(^{2+}\) in it?