science class 6 ch - 1, 2, 3 p-t 1

Loss of vision occurs because of ______.

• Eating too much sugar
• Vitamin D

• Lack of physical exercise
• Vitamin A

Deficiency of vitamin B1 leads to _______.

• Scurvy
• Rickets
• Beriberi
• Night Blindness

Weak bones and tooth is a symptoms for deficiency of ________.

• Vitamin A
• Goiter

• Calcium

• Anemia

Deficiency of iron leads to _______.

• Scurvy
• Rickets
• Anemia
• Pellagra

Bones becomes soft and bent is a symptoms of _______.

• Diabetes
• Hypertension
• Rickets
• Asthma

Glass is _____ materials.

• transparent
• edible
• flammable
• flexible

Condensation is opposite of ______.

• Evaporation
• Sublimation
• Freezing
• Melting

Salt is obtained from sea water by the process of ______.

• Fermentation
• Distillation
• Evaporation
• Filtration

The method of separating seeds of paddy from its stalk is called _______.

• Winnowing
• Threshing
• Sieving
• Handpicking

A mixture of milk and water can be separate by _______.

• Evaporation
• Distillation
• Filtration
• Magnetism