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…

CBSE Class 10 Chemistry Chemical Reactions And Equations Worksheet Set B

MULTIPLE CHOICE QUESTIONS: Question. Some crystals of copper sulphate were dissolved in water. The color of the solution obtained would be: (a) Green (b) Red (c) Blue (d) Brown Answer. C Question. When Zinc pieces are added to dilute HCl taken in a test tube, then: (a) No…