Explanation

Carbon Dioxide gas is used to make soda water.

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VU FIA SUB INSPECTOR PAPER 30-1-2021

Explanation

Light from Sun travels a distance of  150 Million km before it reaches Earth

Explanation

Submarines operate based on Archimedes' principle.

It allows them to control buoyancy and submerge or surface by adjusting their density relative to the surrounding water.

Explanation

• A dry chemical Fire extinguisher can be used on all types of fire
• ***
• An ABC or Multi-Purpose Dry Chemical portable fire extinguisher is useful for Class A, B, and C fires.
• These units can be used on wood, paper, cloth, trash, flammable liquids, and energized electrical equipment.
• ***

• extinguishers بجھانے والے

  Carbon dioxide is used in fire ‘extinguishers’

  
  

Explanation

Petroleum, natural gas & coal are called non-renewable energy sources.

The most popular renewable energy sources currently are:

1.      Solar energy

2.      Wind energy

3.      Hydro energy

4.      Tidal energy

5.      Geothermal energy

6.      Biomass energy

RK12-12-2022

Explanation

Emphysema is a common respiratory problem among smokers.

It is a type of chronic obstructive pulmonary disease (COPD) that causes shortness of breath and makes it difficult to breathe.

Emphysema damages the air sacs in the lungs, which can lead to:

1. Shortness of breath
2. Wheezing
3. Coughing
4. Chest tightness

Smoking is the leading cause of emphysema, as it damages the lung tissue and leads to inflammation.

Explanation

COVID-19 primarily affects the lungs.

It leads to severe respiratory issues and pneumonia.

In critical cases, it can cause acute respiratory distress syndrome (ARDS), which can be lethal.

Explanation

Deserts are formed by weathering processes as large variations in temperature between day and night put strains on the rocks, which consequently break in pieces.

Although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods.

Explanation

The Earth rotates at 15° per hour.

It spins on its axis once every 24 hours.

At the equator, the Earth's spin is about 1,000 miles per hour (1,600 km per hour).

The Earth rotates counterclockwise, from west to east.

 The Earth also moves around the Sun, which is called its orbit.

It takes the Earth 365 1/4 days to complete one orbit around the Sun.

Explanation

Transpiration is the process of removal of excess water from the plants through tiny openings in leaves known as stomata.