Class X Physics + Chemistry SA-1 Time- 2 hrs MM : 50
General Instructions:-
1. Question 1 to 10very short answer questions of 1 mark each
4. Question no 23 and 24 are long answer question carrying 5 marks.
1. What is common to all acids?
2. A white chemical compound becomes hard on mixing proper quantity of water. It is also used in surgery to maintain joins in a fixed position. Name the chemical compound.
3. Name a device that help to maintain a potential difference across a conduct
4. A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical material which he can mix the soil to adjust its pH.
5. Write the pH value, after which teeth start decaying?Class X Physics + Chemistry SA-1 Sample paper
General Instructions:-
1. Question 1 to 10very short answer questions of 1 mark each
2. Question no 11 to 16 are short answer questions of 2 marks each
3. Question no 17 to 22 are also short answer question carrying 3marks each
4. Question no 23 and 24 are long answer question carrying 5 marks.
1. What is common to all acids?
2. A white chemical compound becomes hard on mixing proper quantity of water. It is also used in surgery to maintain joins in a fixed position. Name the chemical compound.
3. Name a device that help to maintain a potential difference across a conduct
4. A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical material which he can mix the soil to adjust its pH.
5. Write the pH value, after which teeth start decaying?
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