MCQ - NIOS Class 10 Science & Technology A small palette of NaOH is kept on dry red litmus paper. Initially, no changeis observed but after some time its colour starts changing to blue around theplace where the palette of NaOH is kept. Explain these observations. 08/08/2023 WNA24 108 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology What happens when a dry strip of each of red litmus paper and blue litmus paper is brought in contact with HCl gas? In which case a change would be observed if the strips are moistened and then brought in contact with HCl gas and what would be the change? 08/08/2023 WNA24 139 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology List three categories of substances that can react with a base. Give one example of each and write the chemical reaction involved in each case. 08/08/2023 WNA24 86 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology Give one example each of the following (i) a strong base (ii) a weak base. 08/08/2023 WNA24 78 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology “Corrosive action of acids is not related to their strength”. Justify this statement. 08/08/2023 WNA24 78 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology What is the name given to the reaction between an acid and a base? What are the products formed in such reactions? 08/08/2023 WNA24 92 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology What type of oxides react with acids? Give one examples of this type of oxide and write down the balanced equation for the reaction. 08/08/2023 WNA24 74 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology Which gas is evolved when an acid reacts with metal carbonates? Which other category of compounds would produce the same gas on reacting with acids? 08/08/2023 WNA24 98 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology Write down the reaction between zinc and sulphuric acid. 08/08/2023 WNA24 110 Views 0 Comments Read more
MCQ - NIOS Class 10 Science & Technology Descriptive Questions 08/08/2023 WNA24 125 Views 0 Comments Read more