List of top Chemistry Questions

A solution has an osmotic pressure of \( x \) kPa at 300K having 1 mole of solute in \( 10^{-5} \, \text{m}^3 \) of solution. If its osmotic pressure is reduced to \( \frac{1}{10} \) of its initial value, what is the new volume of solution?
Which of the following is NOT present in baking powder?
Which of the following salts contain interstitial water molecules in it?
What type of intermolecular force is present between magnesium chloride and water?
What is the oxidation number of As in H\(_3\)AsO\(_3\)?
What will be the concentration of NaCl solution, if the molar conductivity and conductivity of NaCl solution are 124.3 \(\Omega^{-1}\)cm\(^2\)mol\(^{-1}\) and 1.243 × 10\(^-4\) \(\Omega^{-1}\)cm\(^1\) respectively?
Which among the following is used as refrigerants and for air conditioning?
Identify the product ‘A’ in the following reaction:
\text{Aniline} + (CH\(_3\)CO)\(_2\)O \(\xrightarrow{\text{pyridine}}\) A
The reaction \( 2R - Cl + CoF_2 \rightarrow 2R - F + CoCl_2 \) is an example of .......
What is the value of C-O-H bond angle in CH\(_3\)-OH?
What is the effective atomic number of Zn in \([Zn(NH_3)_4]SO_4\)? (Atomic number of Zn = 30)
Alkyl cyanides on reduction by sodium and ethanol give primary amines. This reaction is called as _____.
A metallic element crystallizes in simple cubic lattice. If edge length of the unit cell is 34Å, with density 8 g/cm\(^3\), what is the number of unit cells in 100 g of the metal? (Molar mass of metal = 108 g/mol)
Which among the following is an antioxidant?
Which among the following compounds belongs to lipids?
Zirconium is refined by ..................
Identify the enzyme that catalyses the reaction of CO\(_2\) with water in the human body.
If concentration of reactant ‘A’ is increased by 10 times, the rate of reaction becomes 100 times. What is the order of reaction if rate law is rate = k[A]\(^n\)?
Which among the following compounds has the highest boiling point?
What is the bond order of B\(_2\) molecule?
Which among the following is non-poisonous in nature?
Xenon crystallizes in fcc lattice and the edge length of unit cell is 620 pm. What is the radius of Xe atom?
If a centimolar aqueous solution of K\(_3\)[Fe(CN)\(_6\)] has degree of dissociation 0.78, what is the value of van't Hoff factor?
Which among the following pairs of halogen forms the interhalogen compound of the type XX'Y?
Which of the following statements is true for the carbonyl group?