Science Quiz 2

Which of the halogens is the most active?

• Chlorine

• Bromine

• Fluorine

• Iodine

All of the following are endangered species, except

• ibis bird

• dodo bird

• bald eagle

• papyrus plant

............... is an example of microfossils.

• Mammoth

• Coral

• Foraminifera

• Archaeopteryx

All the following elements are from semi-metals, except

• tellurium

• silicone

• boron

• bromine

From alkali metal is

• sodium

• helium

• calcium

• bromine

............................................. indicate(s) extinction.

• Fossils

• Protectorates

• Evolution

• Ecological equilibrium

............................. form negatively charged ions when they enter in the chemical reactions.

• Inert gases

• Metals

• Halogens

• Alkali metals

If the temperature at the base of Everest mountain is 30°C, what is the temperature at its top if the mountain height is 2 km?

• 30°C

• 43°C

• 17°C

• 23.5°C

Fossils are often found in ...................................... rocks.

• metamorphic

• sedimentary

• igneous

• molten

There are ........................................... bonds inside water molecules.

• hydrogen

• covalent

• ionic

• metallic