CLASS-7 SCIENCE REVISION

Which of the following organisms belong to saprotrophs?

• Algae

• Fungi

• Vulture

• Bacteria

Largest gland in our body is

• Skin

• Heart

• Liver

• Lungs

Which of the following is not a type of silk?

• Mulberry silk

• Tassar silk

• Mooga Silk

• Moth Silk

Which of the following is not a method of heat transfer?

• Conduction

• Induction

• Covection

• Radiation

Identify the process:

• Shearing

• Scouring

• Combing

• Sorting

Sodium hydroxide and Hydrochloric acid reacts to form

• Sodium Chloride

• Sodium

• Hydrogen gas and Chlorine gas

• Sodium hypochlorite

How crystals of pure substances are formed?

• Crystallization

• Chromatography

• Peptization

• All of the above

Which of the following is generally not predicted in daily weather report?

• Temperature

• Pressure

• Humidity

• Rainfall

Which of the following is not true?

• Air exerts pressure

• Air can be compressed

• Air move from low pressure area to high pressure area

• Air is not affected by temperature.

Which of the following is not an adaptive feature in polar bear?

• White fur

• Strong sense of smell

• Long curved and sharp claws

• Long tail