science quiz class 7

Which one of the following plants possess fibrous root ?

• Mustard

• Maize

• Mango

• peepal

Which one of the following organisms is not a unicellular organism?

• Paramecium

• Euglena

• Earthworm

• Amoeba

From which organ do the aquatic animals breathe?

• Lungs

• Gills

• Skin

• Gils or skin

The atomic number of the sodium element is

• 9

• 10

• 11

• 12

In which medium the velocity of sound is least?

• Steel

• water

• air

• gold

which one of the following substance has fixed shape and volume?

• Ice

• Water

• vapour

• milk

Which class of lever does the scissor belong to?

• first

• second

• Third

• None of the above

Which planet is known as red planet ?

• Mercury

• Venus

• Earth

• Mars

Planets do not have their own ...........

The thickness of the mantle layer of the earth is

• 50 km

• 3000 km

• 2100km

• 1300 km