Priyanka Kabra 
ICSE Class 10 Chemistry Competency Focused Practice Questions Solution: V. Structural diagram: (1 Mark each) Question 69. [Organic Chemistry]Draw the structural diagram of the product obtained when ethene reacts with chlorine. Answer: Explanation: When ethene reacts with chlorine, the product formed is 1,2-dichloro ethane. CH2 = CH2 + Cl2 → ClCH2 – CH2Cl Question 70. … Read more
ICSE Class 10 Chemistry Competency Focused Practice Questions Solution IV. One Word Answer: (1 Mark each) Question 59. [Analytical Chemistry] Name a positive non-metallic radical which is basic in nature. Answer: Ammonium (NH4+) Explanation: In ammonia the two electrons remaining on the nitrogen atom form a bond with the hydrogen ion. This bond that is … Read more
ICSE Class 10 Chemistry Competency Focused Practice Questions Solution III. Match the Following Question 50. [Periodic Properties and Variations of Properties] Column A Column B (a) Alkali metals (i) Be, C, O, F (b) Alkaline earth metals (ii) F, Cl, Br, I (c) Atomic radius decreases (iii) P, Al, Na, S (d) Non-metallic character decreases … Read more
ICSE Class 10 Chemistry Competency Focused Practice Questions Solution II. Fill in the Blanks (1 mark each) Question 39. [Mole Concept and Stoichiometry]Fill in the blanks by choosing the correct options given in the brackets: An aqueous solution of gas X turns red litmus blue, so it must contain (i)_______________(hydrogen/ hydroxyl) ions. When this solution … Read more
ICSE Class 10 Chemistry Competency Focused Practice Questions Solution I. Multiple Choice Questions (1 mark each) Question 1. [Analytical Chemistry] Ravi was asked to identify the cation present in the salt solution. He added one of the reagents given below and got a reddish-brown precipitate. The reagent that he used is: (a) Silver nitrate solution(b) … Read more
ICSE Class 10 Biology Competency Focused Practice Questions Solution: Long Answer Questions (3 marks each) Question 53Rohit’s father has increased thirst and hunger with frequent urination. He also gets fatigued very often. His doctor advised him to get a blood sugar profile test done. (a) Name the disease based on the symptoms given above. (b) … Read more
ICSE Class 10 Biology Competency Focused Practice Questions Solution: Short Answer Questions (2 marks each) Question 31Haemorrhage frequently happens in viral dengue fever. Compare this condition with haemophilia. Answer: In Dengue fever, the platelet count drops sharply. This leads to coagulation of blood slowly, which can lead to haemorrhage. On other hand, haemophilia is a … Read more
ICSE Class 10 Biology Competency Focused Practice Questions Solution: Fill in the Blank (1 mark each) Question 22Osmosis is controlled by the concentration of …………… molecules. Answer: Osmosis is controlled by the concentration of water molecules. Question 23An animal cell is kept in a lower solute concentration fluid. The cell will …………… . (Enlarge / … Read more
ICSE Class 10 Biology Competency Focused Practice Questions Solution: Multiple Choice Questions (1 mark each) Question 1Rita suffers from constant headaches and high blood pressure. Her residence is close to an airport. What could be the most likely cause of her condition? (a) Noise pollution(b) Air pollution(c) Nuclear pollution(d) Water pollution Answer: (a) Noise pollution … Read more
ICSE Maths Competency Based Questions Solution Long Answer Questions 2 (5 Marks Each) Question 110On seeing the below display board outside Pearl Stationary Shop, Chetan enters the shop to buy the following items: Pen Pencil Rainbow cover notebook Price ₹5 each ₹7 each ₹200 each Discount 5% on a dozen pens 10% on 20 pencils … Read more