List of top Chemistry Questions

The osmotic pressure of a 0.1 M solution of NaCl at \(27^\circ\)C is (\(R=0.082\) L atm mol\(^{-1}\) K\(^{-1}\)):
The molarity of a solution containing 4 g of NaOH in 250 mL solution is:
The solubility product of AgCl is \(1.8\times10^{-10}\). The solubility in mol/L is:
The pH of 0.01 M NaOH solution is:
Compound of which transition metal ion is colourless?
The number of elements present in the fifth period of the modern periodic table:
For a reaction, $$ {N}_2{O}_5(g) \rightarrow 2{NO}_2(g) + \frac{1}{2} {O}_2(g) $$ in a constant volume container, no products were present initially. The final pressure of the system when 50% of the reaction gets completed is: 
Identify A, B, and C in the given reaction sequence: \[ \text{A} \xrightarrow{\text{HNO}_3} \text{Pb(NO}_3)_2 \xrightarrow{\text{H}_2\text{SO}_4} \text{B} \rightarrow \text{C (Yellow ppt)}. \]
Given below are two statements: Statement (I): The boiling points of alcohols and phenols increase with increase in the number of C-atoms.
Statement (II): The boiling points of alcohols and phenols are higher in comparison to other classes of compounds such as ethers and haloalkanes. In the light of the above statements, choose the correct answer from the options given below:
What is the law of conservation of mass?
What is the product formed when magnesium ribbon is burnt in oxygen?
Which of the following gases is produced when zinc reacts with dilute hydrochloric acid?
What is the law of conservation of mass?
What is the process called when fats and oils are oxidised and their smell and taste change?
What is the significance of writing physical states in a chemical equation?
Which one of the following processes involves chemical change?
Which of the following oxides is amphoteric in nature?
The volume of CO\(_2\) liberated in litres at STP when 25 g of CaCO\(_3\) is treated with dilute HCl containing 14.6 g of HCl is:
How many grams of calcium carbonate ($\mathrm{CaCO}_3$) are required to completely neutralize 200 mL of 0.5 M HCl? Given the reaction: $$ \mathrm{CaCO}_3 + 2 \mathrm{HCl} \rightarrow \mathrm{CaCl}_2 + \mathrm{H}_2 \mathrm{O} + \mathrm{CO}_2 $$ (Molar mass of $\mathrm{CaCO}_3 = 100 \, \text{g/mol}$)
Consider the following: Statement I: CCl4 does not undergo hydrolysis. But SiCl4 undergoes hydrolysis.
Statement II: Thermal and chemical stability of GeX4 is more than GeX2.
Markovnikov's rule is applicable to which of the following reactions?
What is the major product when 1-bromopropane undergoes nucleophilic substitution with \(OH^-\)?
How many grams of sodium chloride (NaCl) are produced when 2.0 moles of sodium (Na) react with excess chlorine gas (Cl\(_2\)? The balanced chemical equation for the reaction is: \[ 2 \, \text{Na} (s) + \text{Cl}_2 (g) \rightarrow 2 \, \text{NaCl} (s) \]
In the reaction \( 2 \, \text{H}_2 + \text{O}_2 \rightarrow 2 \, \text{H}_2\text{O} \), how many moles of water are produced when 4 moles of hydrogen react with excess oxygen?
What is the volume of oxygen required for complete combustion of 0.25 mole of methane at S.T.P.?