CBSE Class 10 Science Chemistry Study of properties of HCI Acid and NaOH Assignment
Objective: To carry out reactions of Hydrochloric acid and NaOH with: (a) Blue / red litmus, (b) Zn Metal, and (c) Sodium Bicarbonate. Requirement: Test tubes, litmus papers, Zn granule, solid NaHCO3, match box, dil. HCl acid, dil. NaOH solution, etc. Procedure: Take one…
CBSE Class 10 Science Chemistry Saponification Preparation of Soap Assignment
Objective: To study Saponification reaction for the preparation of Soap. Requirements: Sodium hydroxide, vegetable oil, ethanol, common salt, distilled water, beakers, measuring cylinder etc. Theory : Soaps are sodium or potassium salts of carboxylic acids with long…
CBSE Class 10 Science Chemistry Properties of Acetic Acid Assignment
Objective: To study two physical and two chemical properties of acetic acid. Requirements: Test tubes, Glass tubes (or dropper), Glacial acetic acid, ethanol, con. H2SO4, saturated solution of NaHCO3, lime water, etc. Concepts: Molecular formula: CH3COOH Structural formula…
CBSE Class 10 Science Chemistry Displacement Reaction and Reactivity Series Assignment
Objective: To study the interaction of metals namely copper, iron, zinc and Aluminium with their salt solutions and arrange them according to their reactivity. Principle: More reactive metals displace less reactive metals from their compounds. Example: CuSO4 + Fe →…
CBSE Class 10 Science Chemistry Different Types of Chemical Reactions Assignment
Combination reaction Objectives: To study the Combination reaction of Quick lime (CaO) in water Requirements: CaO, water, beaker, thermometer, stirrer, etc. Points to remember: 1. CaO is a white powder 2. It reacts with water to form slaked lime [Ca(OH)2] 3. This process…
CBSE Class 10 Science Chemistry Determination of pH Assignment
Objective: To find the pH of Dil HCl, Dil. NaOH, Dil. Acetic Acid, Lemon Juice, Water and Dil. NaHCO3 solution, using pH paper (or Universal Indicator). Requirements: strips of pH paper, test tubes, standard pH reference chart, and various samples Procedure: Take 1 ml of the…
CBSE Class 10 Science Chemistry Cleaning Capacity of Soap Assignment
Aim: To study the comparative cleaning capacity of a sample of soap in soft and hard water. Materials required: beakers, test tubes,Distilled water, Calcium chloride,glass rods,Pre -prepared soap solution ,Measuring cylinder ,Measuring scale etc Theory: Although soap is a…
CBSE Class 10 Chemistry Revision Worksheet Set D
Q1. An iron salt ‘X’ on heating produces a brown coloured solid oxide ‘Y’ and releases suphur oxides. Identify X and Y. Which type of reaction is this? Write balanced chemical equation for this reaction. Q2. Identify the oxidizing agent and reducing agent in the following…
CBSE Class 10 Chemistry Periodic Classification Of Elements Worksheet Set B
Objective Questions Question : Which type of compound is formed by the elements of group 1 and group 17? a. covalent compound b. Organo-metallic compounds c. coordinate compound d. Ionic compound Answer : D Explanation: Elements of group 1 can…
CBSE Class 10 Chemistry Periodic Classification Of Elements Worksheet Set A
Question : An element X (2, 8, 2) combines separately with (SO4)2–and (PO4)3– radicals. The chemical formulae of the compounds are (a) X2SO4 : X3(PO4)2 (b) XSO4 : X3(PO4)2 (c) X(SO4)2 : X2(PO4)3 (d) XSO4 : X3(PO4)3 Answer : B Question…
CBSE Class 10 Chemistry Metals And Non Metals Worksheet Set B
Question : Halide ore out of the following is - (A) cinnabar (B) horn silver (C) limonite (D) galena Answer : B Question : Which of the following is not a method for purification of metals ? (A) Calcination (B)…
CBSE Class 10 Chemistry Chemical Reactions And Equations Worksheet Set A
Question. In the balanced equation - aHgS+bHCl + cHNO3 → dH2HgCl4 + eNO + fS + gH2O The values of b, c, e, and g are respectively - (A) 2, 2, 4, 12 (B) 6, 1, 1, 2 (C) 12,2, 2, 4 (D) both (B) and (C) Answer. D Question. In the reaction FeSO4 + x → Na2SO4…
CBSE Class 10 Science Carbon And Its Compounds Worksheet Set C
Question. Bromine reacts with saturated hydrocarbon at room temperature in the (a) absence of sunlight (b) presence of water (c) presence of sunlight (d) presence of hydrochloric acid Answer : C Question. The upper and lower homologue of C2H5OH are respectively (a) methyl…
CBSE Class 10 Science Acids Bases And Salts Worksheet Set B
ACIDS BASES AND SALTS Question. Ionic theory of acid and bases was proposed by - (A) Lowry (B) Bronsted (C) Lewis (D) Arrhenius Answer. D Question. The conjugate acid of NH2– is - (A) NH3 (B) NH2OH (C) NH4+ (D) ClO4– Answer. A Question. According to Lewis concept, the…
CBSE Class 10 Chemistry Periodic Classification Of Elements Worksheet Set C
Multiple choice questions Question. According to Mendeleev’s Periodic Law, the elements were arranged in the periodic table in the order of (a) increasing atomic number (b) decreasing atomic number (c) increasing atomic masses (d) decreasing atomic masses Answer. C Question…