Chemistry questions
29404 published questions with worked solutions.
- Which one among the following elements is known to be discovered the earliest ?
- The reaction that occurs on passing carbon dioxide gas through lime water isNot in JEE Main or NEET syllabus
- Which one of the following type of medicines is used for treating indigestion ?Not in JEE Main or NEET syllabus
- Which one of the following is NOT a heterogeneous mixture ?
- Which one of the following is an endothermic reaction ?
- If x is the number of electrons and y is the number of nucleons present in ^ 32 _ 16 S^ 2- , then which one of the following is...
- Which one of the following forms of carbon is thermodynamically most stable?
- Consider the following statements : I. A colloid and a suspension are heterogeneous mixtures. II. Colloids can be separated from...Not in JEE Main or NEET syllabus
- A non-volatile solid solute may be separated from a solution by which of the following processes? I. Evaporation II....
- Which of the following are oxidation reactions? I. Rusting of iron II. Burning of fuel III. Rancidity of oils and fats IV....
- Consider the following statement : "Acids are substances that dissociate in water to give hydrogen ions H^+ (aq), and bases are...
- Superphosphate of lime—a phosphate fertilizer—is obtained by the reaction of
- 1·7 g of silver nitrate is dissolved in 100 g of water, and 0·585 g of sodium chloride is dissolved in 100 g of water. Both are...
- Consider the following statements : I. Pine oil is used as antifoaming agent in the emulsion paints. II. Protective colloids are...Not in JEE Main or NEET syllabus
- Consider the following statements : I. Soaps are sodium or potassium salts of long-chain carboxylic acids. II. The properties of...
- Consider the following pairs of reactions and properties : Reactions : Properties I. Fe ,(s) + 2HCl ,(aq) FeCl_2 ,(aq) + H_2 ,(g)...
- Consider the following statements regarding oxidation numbers : I. The oxidation number of oxygen in peroxides and superoxides is...
- Consider the following statements regarding the properties of hydrogen and water : I. Tritium, the isotope of hydrogen, is...Not in JEE Main or NEET syllabus
- Consider the following statements regarding nitrogen : I. Nitrogen contains a triple bond. II. Nitrogen is a triatomic gas. III....
- In a dry test tube, 2 mL of HCl (0·1 N) is taken. To this, 4 mL of NaOH (0·1 N) is added. The solution is stirred well, followed...