Q. List 10 modern – day animals and using the internet resources link it to a corresponding ancient fossil. Name both.

Q. Which of the following pairs of elements would have a more negative electron gain enthalpy? Explain(a) N or O  (b) F or Cl

Q. What is the most common form of democracy in the modern world? Why?

Q. What are the types of index numbers ?

Q. Give a brief description of the narrators boat. How had the narrator equipped and tested it?

Q. (i) Why does the sky appear dark to an astronaut in space? (ii) Which part of an eye adjusts the size of its pupil?

Q. State the principle of superposition. Name the phenomenon produced due to the superposition of waves.

Q. Essay on problems faced by indian farmers during production

Q. Define density and relative density.

Q. Name the red pigment which carries oxygen in blood.