CBSE Sample Paper 2018 -Solved
SECTION–A 1. Give an example of a flower which contains both stamens and carpels. Hibiscus/Mustard Mention any one point of difference between Pepsin and Trypsin. Pepsin Trypsin (i) Produced in stomach.(i) Produced by pancreas. (ii) Acts in acidic medium.(ii) Acts in basic medium. (Any one) 1 An element ‘X’ has mass number 35 and the number of neutrons, is 18. Identify the group number and period of ‘X’. Atomic number of X = Mass number of X – Number of neutrons = 35 – 18 = 17 ½ Electronic configuration = 2, 8, 7 ½ Group number = Valence electrons +10 = 17 ½ Period = Number of shells = 3 ½ An object of height 1.2 cm is placed before a concave mirror of focal length 20 cm so that a real image is formed at a distance of 60 cm from it. Find the position of an object. What will be the height of the im...