2nd PUC Chemistry Important Questions. We covered all the 2nd PUC Chemistry Important Questions in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
These types of competitive MCQs appear in the exams like MHT-CET, NEET, JEE (Mains), and other Competitive Examinations, etc. We created all the competitive exam MCQs into several small posts on our website for your convenience.
You will get their respective links in the related posts section provided below.
Related Posts:
- Viraf Dalal Chemistry Class 9 Solutions
- Simplified ICSE Chemistry Class 10
- Dr Dalal Chemistry for Class 9
2nd PUC Chemistry Important Objective Questions for Students
The enthalpies of the formation of compound
(A) are Always Negative
(B) Always positive
(C) may be positive or negative
(D) Never negatives
Option c – may be positive or negative
Enthalpy of sublimation of a substance is equal to
(A) Enthalpy of fusion + enthalpy of vaporization
(B) Enthalpy of fusion
(C) Enthalpy of vaporization
(D) Twice of enthalpy of vaporization
Option a – Enthalpy of fusion + enthalpy of vaporization
When water is added to quick lime the reaction is
(A) Explosive
(B) Endothermic
(C) Exothermic
(D) Photochemical
Option c – Exothermic
Heat exchanged in a chemical reaction at constant temperature and pressure is called
(A) Internal energy
(B) Enthalpy
(C) Entropy
(D) Free energy
Option b – Enthalpy
The enthalpy of the combustion of sucrose is 1350 kcal. How much heat is evolved when 17.1 g of sucrose is burnt?
(A) 67.5 Kcal
(B) 13.5 Kcal
(C) 40.5 Kcal
(D) 25.5 K cal
Option a – 67.5 Kcal
An exothermic reaction is spontaneous at
(A) Low temperature
(B) High temperature
(C) at 0°C
(D) greater than 100°C
Option a – Low temperature
The Enthalpy of a compound is equal to its
(A) Heat of formation
(B) Heat of combustion
(C) Heat of formation with opposite sign
(D) the heat of combustion with opposite sign
Option a – Heat of formation
The same weights of the gases are allowed to expand isothermal and reversibly from 10 dm³ to 25 dm³ differently. The work done is maximum under the same condition for
(A) N₂
(B) 02
(C) CO2
(D) C3H8
Option a – N₂
We covered all the 2nd puc chemistry important questions above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
Also, check out:
