Metals and Non-Metals — Science STD 10 — Question

Name two metals which are used:
For making jewellery and to decorate sweets.

Compare the sun and the fossil fuels as the sources of energy.

The following questions are about the nuclear reactor of a power plant.
Is the energy produced by nuclear fission or nuclear fusion?

What sign (+ve or -ve) has been given to the following on the basis of Cartesian Sign Convention?

1. Height of a real image.
2. Height of a virtual image.

h_(1)(cm)	_________	5	10
h_(2)(cm)	-30	-20	_______
M	-2	________	-0.5

Give two examples of alloy.

If someone is suffering from the problem of acidity after overeating, which of the following would you suggest as remedy?
Lemon juice, Vinegar, Baking soda solution Give reason for your choice.

Is oxidation an exothermic or an endothermic reaction?

Unsaturated hydrocarbons are less reactive than saturated hydrocarbons.

Write the electrode reaction for electrolysis of molten magnesium chloride and calcium chloride.