CBSE Class 11 Chemistry Minds Map All Chapters
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CBSE Class 12 Physics Formula Booklet
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Class 11 Chemistry Environmental Chemistry Exam Questions
LEVEL -1 1.Name the region of atmosphere which contains Ozone layer? Ans: Stratosphere. 2. Name the chemical responsible for acid rain? Ans: Oxide of Sulphur , Oxide of Nitrogen. 3.What is CFC stand for ? Ans: Chlorofluorocarbon or Freons. 4. Name the gases…
Class 11 Chemistry Hydrocarbons Exam Questions
LEVEL – 1 1. Why is cyclproprane more reactive than propane? Ans: In Cyclopropane,bond angle is 60o which is much less compared to the normal tetrahedral bond angle of 109.5o for sp3 hybridized carbon. Therefore, the molecule is very much strained and hence reactive. 2.…
Class 11 Chemistry Organic Chemistry Some Basic Principles and Techniques Exam Questions
LEVEL – 1 1. Suggest a method to purify a liquid which decomposes at its boiling point? Ans: The process Distillation Under reduced pressure is used to purify aliquid which decomposes at its boiling point. 2. How will you separate a mixture of O-nitrophenol and P-…
Class 11 Chemistry The p Block Element Exam Questions
LEVEL – 1 1. Why is boron used in nuclear reactions? Ans: Because Boron can absorb neutrons . 2. By giving a balanced equation show how B(OH)₃ behaves as an acid in water. 3. Name the element of group 14 which exhibits maximum tendency for catenation. Ans: Carbon 4.…
Class 11 Chemistry The s Block Element Exam Questions
LEVEL – 1 1. Name the alkali metal which form superoxide when heated in excess of air. Ans: Potassium 2. LiCl is more soluble in organic solvent, why? Ans: It is due to covalent in nature. 3. Explain why Sodium is less reactive than Potassium? Ans: Due to less metallic…
Class 11 Chemistry Hydrogen Exam Questions
LEVEL – 1 1.What happens when peroxydisulphuric acid is hydrolysed with water? Ans: Sulphuric acid and hydrogen peroxide. 2. Name the gases produced when water reacts with: (a) Aluminium nitride (b) Aluminium carbide Ans: (a)ammonia gas is formed (b) methane is formed…
Class 11 Chemistry Redox Reactions Exam Questions
Redox Reactions MCQ Questions with Answers Class 11 Chemistry Question. Which element undergoes disproportionation in water? (1) Cl2 (2) F2 (3) K (4) Cs Answer (1) Question. Which of the following processes does not involve oxidation of iron? (1) Liberation of H2 from…
Class 11 Chemistry Equilibrium Exam Questions
LEVEL – I 1. Mention the factors that affect equilibrium constant. Ans: Temperature, pressure, catalyst and molar concentration of reactants and products. 2. What is ionic products of water? Ans: 3. Write conjugates acids of H2O & NH3. Ans: 4. Define Arrhenius…
Class 11 Chemistry Thermodynamics Exam Questions
LEVEL-1 1. Can the absolute value of internal energy can be determined? Why or why not? Ans: No, because it is the sum of different types of energies some of which cannot be determined. 2. Separate out the following into extensive and intensive: Volume, Temperature,…
Class 11 Chemistry States of Matter Structure Exam Questions
LEVEL -1 1. At what condition surface tension vanishes? Ans: At critical temperature. 2. Why He is used in balloons in place of hydrogen? Ans: Due to the incombustible nature of He. 3. Below what temp. A gas does not obey ideal gas laws? Ans: Below Boyle’s Temperature…
Class 11 Chemistry Chemical Bonding and Molecular Structure Exam Questions
LEVEL-1 1. Arrange the following in order of increasing bond angles around central atom SF6,CF4,BF3 Ans: SF6,CF4,BF3 2. A single bond between two atoms is a sigma bond. Comment? Ans: Bonding taking place along the nuclear axis. 3. Name an inorganic molecule showing…
Class 11 Chemistry Classification of Elements and Periodicity in Properties Exam Questions
LEVEL 1 1. What would be the IUPAC name and symbol for the element of atomic no.120? Ans: Unbinilium (Ubn) 2. State Mendeleev’s periodic law. Ans: Physical and chemical properties of elements are the periodic function of their atomic masses. 3. How many groups are there…
Class 11 Chemistry Structure of Atom Exam Questions
LEVEL – I 1. The atomic number of an element is 5 and mass number is 11. Find the number of electrons, protons and neutrons present in an atom of it. How can this element be represented? Ans : Number of electrons (Z=5)=5 Number of protons (Z=5)=5 Number of neutrons (A=Z)=11…