Group A (15x1=15)
1. Answer the following questions in short.
a. Define gravity and write its unit.
b. State law of floatation and write its one application.
c. Write any two advantages of fossil fuel.
d. Define heat on the basis of molecular theory.
e. What is an inverter?
f. State Mendeleev’s periodic law.
g. Define positive catalyst with example.
h. What is salt? Give an example.
i. Write two ores of copper
j. What is royal jelly?
k. What is endocrine gland?
l. What is chromosomal disorder?
m. What is recessive character?
n. What is multiple fission?
o. What is tropopause?