CBSE Class 11 Chemistry Thermodynamics Worksheet Set B
Question. Enthalpy change for the reaction, 4H(g) → 2H2(g) is –869.6 kJ The dissociation energy of H – H bond is (a) – 434.8 kJ (b) – 869.6 kJ (c) + 434.8 kJ (d) + 217.4 kJ Answer. C Question. Bond dissociation enthalpy of H2, Cl2 and HCl are 434, 242 and 431 kJ…
CBSE Class 11 Chemistry Thermodynamics Worksheet Set A
Question. Which of the following are not state functions? (I) q + w (II) q (III) w (IV) H – TS (a) (I), (II) and (III) (b) (II) and (III) (c) (I) and (IV) (d) (II), (III) and (IV) Answer. B Question. In a closed insulated container a liquid is stirred with a paddle to…
CBSE Class 11 Chemistry The s-Block Elements Worksheet Set B
Practice Worksheet CBSE Class 11 Chemistry Topic: The s‐Block Elements Very Short Answer Q1) What is the general electronic configuration of alkaline earth metals? Ans: The general electron configuration of all alkaline earth metals is ns2. Q2) How sodium carbonate is…
CBSE Class 11 Chemistry The s-Block Elements Worksheet Set A
Practice Worksheet CBSE Class 11 Chemistry Topic: The s‐Block Elements Very Short Answer Q1) Which alkali metal has the high radioactive and longest lived isotope? Ans: Francium is highly radioactive and the longest lived isotope. Q2) What is the general electronic…
CBSE Class 11 Chemistry The p-Block Elements Worksheet Set A
Practice Worksheet CBSE Class 11 Chemistry Topic: The p‐Block Elements Very Short Answer Q1) What is inert pair effect? Ans: The inert pair effect is defined as the tendency of electrons in the outermost atomic s orbital to remain unionized in compounds of post-…
CBSE Class 11 Chemistry Structure of Atom Worksheet Set D
Practice Worksheet CBSE Class 11 Chemistry Topic: Structure of Atom Very Short Answer Q1) What is quantum mechanics? Ans: The branch of science that takes into account the dual behaviour of matter is called quantum mechanics. Q2) Define one electron systems? Ans: Wave…
CBSE Class 11 Chemistry Structure of Atom Worksheet Set C
Practice Worksheet CBSE Class 11 Chemistry Topic: Structure of Atom Very Short Answer Q1) What are the features are common to all line spectra? Ans: The features common to all line spectra are: line spectrum of element is unique and there is regularity in the line…
CBSE Class 11 Chemistry Structure of Atom Worksheet Set B
Practice Worksheet CBSE Class 11 Chemistry Topic: Structure of Atom Very Short Answer Q1) Who gave the theory of electromagnetic waves? Ans: James Clerk Maxwell gave the theory of electromagnetic waves. Q2) What is classical mechanics? Ans: Classical mechanics is a…
CBSE Class 11 Chemistry Structure of Atom Worksheet Set A
Very Short Answer Question. What are cathode ray discharge tubes? Answer. To study electrical discharge in partially evacuates tubes is called cathode ray discharge tubes. Question. Who showed that electricity is passed through a solution…
CBSE Class 11 Chemistry States of Matter Worksheet Set B
Practice Worksheet CBSE Class 11 Chemistry Topic: States of Matter Very Short Answer Q1) What is an ideal gas equation? Ans: The three laws combined together in a single equation is called an ideal gas equation. Q2) What is equation of state? Ans: Ideal gas equation is a…
CBSE Class 11 Chemistry States of Matter Worksheet Set A
Question. Select one correct statement. In the gas equation,PV = nRT (a) n is the number of molecules of a gas (b) V denotes volume of one mole of the gas (c) n moles of the gas have a volume V (d) P is the pressure of the gas when only one mole of gas is present. Answer…
CBSE Class 11 Chemistry Some Basic Concepts of Chemistry Worksheet Set B
Practice Worksheet CBSE Class 11 Chemistry Topic: Some Basic concepts of Chemistry Very Short Answer Q1) Who proposed the Avogadro’s law? Ans: Avogadro’s Law was proposed with Lorenzo Romano Amedeo Carlo Avogadro. Q2) What is one atomic mass unit? Ans: One atomic mass…
CBSE Class 11 Chemistry Some Basic Concepts of Chemistry Worksheet Set A
Question. The dimensions of pressure are the same as that of (a) force per unit volume (b) energy per unit volume (c) force (d) energy Answer. B Question. Given the numbers : 161 cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers is (a) 3,…
CBSE Class 11 Chemistry Redox Reaction Worksheet Set A
Practice Worksheet CBSE Class 11 Chemistry Topic: Redox Reactions Very Short Answer Q1) What is oxidising agent? Ans: A reagent which can increase the oxidation number of an element in a given substance is called oxidising agent. Q2) Define redox reaction? Ans: …
CBSE Class 11 Chemistry Organic Chemistry Worksheet Set C
Practice Worksheet CBSE Class 11 Chemistry Topic: Organic Chemistry‐ Some Basic Principle and Techniques Very Short Answer Q1) How can we find the percentage of the oxygen in the organic compound? Ans: The percentage of oxygen in an organic compound is usually found by…