CBSE Class 10 Science Question Paper 2014 Set 1 - Outside Delhi

CBSE Class 10 Science Question Paper 2014 Set 1 - Outside Delhi. Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practiced to get better marks in examinations.

SECTION A

1. List any two properties of the elements belonging to the first group of the modern periodic table.

2. What is a gene ?

3. Give one example each from your daily life where the domestic waste can be effectively reused and recycled.

4. What is the main difference between sperms and eggs of humans ? Write the importance of this difference.

5. List two possible ways in which a concave mirror can produce a magnified image of an object placed in front of it. State the difference, if any, between these two images.

6. What are decomposers ? List two important roles they play in the environment.

7.Why is sustainable management of natural resources necessary ? Out of the two methods – reuse and recycle – which one would you suggest to practise and why ?

8.What are homologous series of carbon compounds ? Write the molecular formula of two consecutive members of homologous series of aldehydes. State which part of these compounds determines their

(i) physical and (ii) chemical properties. 31/1 4

9.A carboxylic acid (molecular formula C₂H₄O₂) reacts with an alcohol in the presence of an acid catalyst to form a compound ‘X’. The alcohol on oxidation with alkaline KMnO₄ followed by acidification gives the same carboxylic acid C₂H₄O₂. Write the name and structure of (i) carboxylic acid, (ii) alcohol and (iii) the compound ‘X’.

10.The electrons in the atoms of four elements A, B, C and D are distributed in three shells having 1, 3, 5 and 7 electrons in the outermost shell respectively. State the period in which these elements can be placed in the modern periodic table. Write the electronic configuration of the atoms of A and D and the molecular formula of the compound formed when A and D combine.

Please click the link below to download pdf file of CBSE Class 10 Science Question Paper 2014 Set 1 - Outside Delhi.