
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

ICSE Class IX Sample / Model Paper 2027 : Chemistry

7 pages, 0 questions, 0 questions with responses, 0 total responses,

Winona Rodriquez
Jamnabai Narsee School (JNS), Mumbai

+Fave Message

Profile Timeline Uploads

Home > resaccess9119 >

Formatting page ...

NODIA APP Sample Paper 9 Page 1 Sample Paper 9 ICSE Class X 2025-26 Chemistry Science Paper - 2 Time: 2 Hours Max. Marks: 80 General Instructions: 1. Answer to this Paper must be written on the paper provided separately. 2. You will not be allowed to write during first 15 minutes. 3. This time is to be spent in reading the question paper. 4. The time given at the head of this Paper is the time allowed for writing the answers. 5. Section A is compulsory. Attempt any four questions from Section B. SECTION-A (Attempt all questions from this Section.) QUESTION 1. Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answer only.) (i) Down the group, electron affinity ............... (a) remains same (c) increases (b) decreases (d) none of the above (ii) Assertion: Tap water conducts electricity but distill water does not conducts electricity. Reason: Tap water conducts electricity as it contains ions whereas distilled water does not contain ions. (a) Assertion is false, but reason is true. (b) Assertion and Reason both are correct statements, but reason is not the correct explanation of the assertion. (c) Assertion is true, but reason is false. (d) Assertion and Reason both are correct statements and reason is the correct explanation of the assertion. (iii) Element with an atomic number 19 will (a) accept an electron and get oxidised (b) accept an electron and get reduced (c) lose an electron and get oxidised (d) lose an electron and get reduced (iv) An acid is a compound which when dissolved in water gives ............... ions as the only ............... ions. (a) Hydronium, negative (c) Hydronium, positive (b) Peroxide, negative (d) Peroxide, positive (v) Arrange the following elements in the order of their increasing non-metallic character Li, O, C, Be, F (a) F<O<C<Be<Li (c) Li<Be<C<O<F (b) F<C<Be<O<Li (d) F<O<Be<C<Li Page 2 Sample Paper 9 ICSE Chemistry Class 10 (vi) The gas obtained at the cathode by passing an electric current through a dilute HCl using platinum electrodes is : (a) Chlorine (c) Hydrogen (b) Hydrogen chloride gas (d) Mixture of hydrogen and chlorine. (vii) A solution whose pH is greater than 7, then the solution is .......... in nature. (a) acidic (c) basic (b) neutral (d) None of these (viii) If an element has seven electrons in its outermost shell then it is likely to have the ............... atomic size among all the elements in the same period. (a) smallest (c) same (b) largest (d) both (a) and (b) (ix) The molecular weight of nitric acid. (a) 53 a.m.u. (c) 60 a.m.u. (b) 50 a.m.u. (d) 63 a.m.u. (x) Which statement about conduction of electricity is correct? (a) Electricity (b) Electricity (c) Electricity (d) Electricity is is is is conducted conducted conducted conducted in in in in aqueous solution by electrons. a metal wire by ions. a molten electrolyte by electrons. an acidic solution by ions. (xi) Chloride formed when nitric acid and hydrochloric acid reacts together. (a) Ammonium chloride (c) Nitrosyl Chloride (b) Hydrochloric acid (d) Ammonia (xii) Which of the following statements is wrong about alkanes ? (a) They are all saturated hydrocarbon. (b) On complete combustion give out carbon dioxide and water. (c) They are almost non polar in nature. (d) They can undergo addition as well as substitution reaction. (xiii) The percentage of hydrogen present in NaOH is (Relative molecular mass of NaOH = 40) (At. wt. of H = 1). (a) 2.5 (c) 0.25 (b) 25 (d) 0.025 (xiv) In a laboratory experiment, a chemist is testing for the presence of ammonia in a solution using a reagent. The reagent used is known to impart a brown coloration when mixed with ammonia. Nessler s reagent has the formula ........... (a) Ag(NH3)2OH (b) K2HgI4 (c) CH3MgCl (d) NH2CONH2 (xv) Assertion : The ionization energy of Mg is more than sodium. Reason : The ionization energy decreases in a period from left to right. (a) Assertion and reason both are correct statements and reason is the correct explanation of the assertion. (b) Assertion and reason both are correct statements, but reason is not the correct explanation of the assertion. (c) Assertion is true, but reason is false. (d) Assertion is false, but reason is true NODIA APP Sample Paper 9 Page 3 QUESTION 2. (i) (a) Which property of ammonia is depicted in above diagram ? (b) What is taken is combustion tube ? (c) Enlist your observations if the compound taken in combustion tube is (1) CuO (2) PbO. (Also give equations) (d) Give the function of cold water. (ii) Identify the following: (a) The energy released when an electron is added to a neutral gaseous isolated atom to form a negatively charged ion. (b) An alkaline earth metal in the third period. (c) A non-metal which has three electrons in the valence shell. (d) An element of period which does not form an oxide. (e) The non-metallic element present in third period other than sulphur and oxygen. (iii) Complete the following by choosing the correct answers from the bracket: (a) Down the group, electron affinity______. (increases, decreases, remains same). (b) The salt prepared by the method of direct combination is______. (iron (II) chloride/iron (III) chloride) (c) Aluminium is utilized in cooking utensils since it is______. (a good conductor of electricity/bright in appearance/a good conductor of heat). (d) Mixing of colourless acids, such as HBr and H 2 SO 4 leads to -------------- colouration. (e) Quicklime is not used to dry HCl gas because ______(CaO is alkaline, CaO is acidic, CaO is neutral) (iv) Match the column A with column B. Column A Column B 1. Sodium chloride (a) Increases 2. Ammonium ion (b) Covalent bond 3. Electro-negativity across the period (c) Ionic bond 4. Non metallic character down the group (d) Covalent and Co-ordinate bond 5. Carbon tetrachloride (e) Decreases (v) Give the structural formula for the following : (a) Methanoic acid (b) Ethanal (c) Ethyne (d) Acetone (e) 2-methyl propane. Page 4 Sample Paper 9 ICSE Chemistry Class 10 SECTION-B (Attempt any four questions.) QUESTION 3. (i) Name the following : (a) A gas which forms explosive mixture with air. (b) Solution used for storing biological specimens. (ii) (a) HCl, HNO3 and H2SO4 are the formula of three compounds. Which of these compounds has the highest boiling point and which has the lowest ? (b) Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each, help to distinguish between the two ? (iii) Consider an element X that belongs to the 3rd period and Group II of the periodic table. Use the following context and answer the questions based on your knowledge of the periodic table: X is used in the manufacturing of lightweight structural materials, especially in the automotive and aerospace industries due to its low density and high strength. This element is also important in biological processes, particularly in human bones and teeth. (a) State the number of valence electrons in atom J . (b) Which element shown forms ions with a single negative charge? (c) Which metallic element is more reactive than R ? (iv) (a) A solution has a pH of 7. Explain how you would (1) increase its pH (2) decrease its pH (b) If a solution changes the colour of litmus from red to blue, what can you say about its pH? (c) What can you say about the pH of a solution that liberates CO2 from sodium carbonate ? QUESTION 4. (i) (a) From the metals copper, iron, magnesium, sodium and zinc, select a different metal which does not react with cold water but reacts with steam when heated. (b) Arrange the metals in [a] in decreasing order of reactivity. (ii) Calculate the mass of (a) 1022 atoms of sulphur. (b) 0.1 mole of carbon dioxide. [Atomic mass: S = 32, C = 12 and D = 16 and Avogadro s Number = 6 # 1023] Continue on next page..... NODIA APP Sample Paper 9 Page 5 (iii) Study the figure given below and answer the questions that follow: (a) Identify the gas Y . (b) What property of gas Y does this experiment demonstrate? (c) Name another gas which has the same property and can be demonstrated through this experiment. (iv) The following questions are based on the preparation of ammonia gas in the laboratory: (a) Explain why ammonium nitrate is not used in the preparation of ammonia. (b) Name the compound normally used as a drying agent during the process. (c) How is ammonia gas collected? QUESTION 5. (i) Under what conditions do nitrogen and hydrogen combine to form ammonia ? State one large-scale use of ammonia. (ii) What are the terms defined below? (a) A salt containing a metal ion surrounded by other ions or molecules. (b) A base which is soluble in water. (iii) Choose the answer from the list which fits the description. (Calcium silicate, zone of heat absorption, coke, combustion zone, alumina) (a) Name of the compound which is formed by the reaction between silica and calcium oxide. (b) Name of the middle part zone of the blast furnace. (c) A black powdery substance is used for the reduction of zinc oxide during its extraction process. (iv) Ethane, a versatile hydrocarbon, is widely used in the chemical industry for the production of various valuable products. Its reactivity with different substances like hydrogen, chlorine, and heat under specific conditions results in the formation of products that are essential in numerous applications, including the production of polymers, solvents, and fuels. Based on this context, write the balanced equations for the following reactions and name the products formed: (a) A mixture of ethane and hydrogen is passed over heated nickel. (b) Ethane is treated with chlorine. (c) Ethane is heated to 200 C under pressure. Page 6 Sample Paper 9 ICSE Chemistry Class 10 QUESTION 6. (i) What is the mass in grams of (i) 2.24 millilitres of propane at S.T.P.? (ii) 448 millilitres of Nitric oxide at S.T.P.? (ii) (a) Give the name and formula of the acid salt which gives sodium ions and sulphate ions in solution. (b) From the following list of substances, choose those which meet the description given below. Ammonium chloride, ammonium nitrate, chlorine, dilute hydrochloric acid, iron, lead nitrate, manganese (IV) oxide, silver nitrate, sodium nitrate sulphur. Two compounds whose aqueous solution gives white precipitate with dilute hydrochloric acid. (iii) In industrial applications, electrolysis is commonly used for the refining of metals like copper. When copper(II) sulfate solution undergoes electrolysis using platinum as the cathode and carbon as the anode, certain reactions occur at the electrodes, which play a critical role in metal purification processes. Based on this, answer the following questions: (a) What do you observe at the cathode and at the anode? (b) What change is noticed in the electrolyte? (c) Write the reactions at the cathode and at the anode. (iv) (a) The ions which discharge on the positive electrode during electrolysis______electrons. Thus the ions are said to be_____. (b) Hydrogen and metallic ions are______because they______electrons at cathode. (c) Non-metallic ions are_____because they____electrons at anode. QUESTION 7. (i) Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH 2 BR - CH 2 Br A Br2 /CCl 4 CH 2 Br - CH 2 Br (a) Draw the structural formula of A. (b) What type of reaction has A undergone? (c) What is your observation? (ii) Give suitable chemical terms for the following : (a) A salt formed by incomplete neutralisation of an acid by a base. (b) A definite number of water molecules bound to some salts. (c) The process in which a substance absorbs moisture from the atmospheric air to become moist, and ultimately dissolves in the absorbed water. (iii) Continue on next page..... NODIA APP Sample Paper 9 Page 7 The above diagram shows industrial preparation of nitric acid. (a) What is the ratio of the reactants taken in the above process ? (b) Name the common name of this process. (c) Name the catalyst used. (d) Why gases entering the apparatus must be pure ? QUESTION 8. (i) Distinguish between the following pairs of compounds using a reagent as a chemical test: (a) Calcium nitrate and Zinc nitrate solution. (b) Ammonium sulphate crystals and Sodium sulphate crystals. (ii) Ionic compounds do not conduct electric current in the solid state, why ? (iii) Write the observations and balanced equations for the following reactions : (a) Sodium hydroxide is added drop-wise till in excess to a solution of zinc sulphate. (b) Ammonium hydroxide is added first in a small quantity and then in excess to a solution of copper sulphate. (c) Excess of ammonium hydroxide is added to a substance obtained by adding hydrochloric acid in silver nitrate solution. (iv) Give reasons: (a) Pure nitric acid gives a yellow brown colour when exposed to light. (b) Colourless nitric oxide forms brown fumes in air. (c) Aluminium is more active metal than iron, but suffers less corrosion. ***************

Formatting page ...

resaccess9119 chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: