________ was the first Indian woman who travelled to the space.
Leela Bai
Fathima Beegam
Kalpana Chowla
Sarojini Naidu
Dissolution of washing soda in water is ......
an exothermic change
an endothermic change
an irreversible change
an undesirable change
The method used to separate the seeds from the fruit juice is
Filtration
Sieving
Crystallization
Magnetic separation
Which of the following situation is an example of slow change?
Germination of seed
Cooking of food
Burning of a piece of paper
Glowing of electric bulb
The change in which the substance cannot be converted back into its
reversible
irreversible
undesirable
periodic change
What is the suitable method of separating higher impurities from a mixture.
Winnowing
Hand picking
Vaporisation
