s block elements – Important Questions & Answers
s block elements – Important Questions & Answers s block elements Que 1. Why are alkali metals not found in nature? Ans 1. Due to high chemical reactivity alkali metals…
Discuss the various reactions involved in the Solvay process
Que. Discuss the various reactions involved in the Solvay process. Ans. In the Solvay process. When carbon dioxide is passed through a concentrated solution of brine saturated with NH3,…
An element occupies group number 1 and period number 3. This element heated in the air gives compound A. With water, it gives compound B which is a strong base. The reaction of B with ammonia gives compound C, which is used as a reducing agent in organic chemistry. Identify the element A, B, and C.
Que. An element occupies group number 1 and period number 3. This element heated in the air gives compound A. With water, it gives compound B which is a strong…
What is entropy? Why is the entropy of a substance taken as zero at 0K? Calculate the ΔG for the reaction? N2(g) + 3H2(g) → 2NH3(g) at 298K The value of equilibrium constant (K) is 6.6 × 105, R = 8.314 JK-1mol-1.
Que. What is entropy? Why is the entropy of a substance taken as zero at 0 K? Calculate the ΔG for the reaction? N2(g) + 3 H2(g) → 2 NH3(g)…
(Solutions) Chemical Kinetics Class 12 Test – 1
(Solutions) Chemical Kinetics Class 12 Test – 1 Chemical Kinetics Class 12 Ans 1. (B) Rate is inversely proportional to the surface coverage Ans 2. (A). V0 ∝ a Vt…
Chemical Kinetics Class 12 Test – 1
Chemical Kinetics Class 12 Test – 1 Chemical Kinetics Que 1. The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the (A)…
Answers Electrochemistry Important Questions – Class 12
Answers Electrochemistry Important Questions – Class 12 Answers Electrochemistry Important Questions Ans 1. Cell stops working after some time because the electrode potential of both the electrodes becomes equal. Ans…
Electrochemistry Important Questions – Class 12
Electrochemistry Important Questions – Class 12 Electrochemistry Important Questions Que 1. Why does a cell stop working after some time? Que 2. What is the electrolyte used in a dry…
(Answers) Class 10 Chemical Reactions and Equations Test – 1
(Answers) Class 10 Chemical Reactions and Equations Test – 1 (Answers) Class 10 Chemical Reactions and Equations Ans 1. The word equation for the reaction is: Iron + Water →…
Class 10 Chemical Reactions and Equations Test – 1
Class 10 Chemical Reactions and Equations Test – 1 Class 10 Chemical Reactions and Equations Que 1. Write a balanced chemical equation for the following (using different steps) (i) Iron…