Question
What is the difference between stratospheric and ground level ozone?
✓
Answer
Stratospheric ozone or good ozone is a layer surrounding the earth’s atmosphere. It protects all life on earth from the damaging effects of the sun’s rays. Ground level ozone is formed by a photochemical reaction between atmospheric oxygen $(O_2)$ and smog forming chemicals at the earth’s surface, it is odourless and colourless, but can have profound effects on the human respiratory system.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
→→→→→→→→→→
The diagrams given below is an experiment conducted to study a factor necessary for photosynthesis. Observe the diagrams and then answer the following questions :
(i) What is the aim of the experiment?
(ii) Identify the special condition inside the flask.
(iii) In what manner do the leaves 1 and 2 differ at the end of the starch test?
(i) What is the aim of the experiment?
(ii) Identify the special condition inside the flask.
(iii) In what manner do the leaves 1 and 2 differ at the end of the starch test?
The diagram alongside represents the structure found in the inner ear. Study the same and then answer the questions that follow:
(i) Name the parts labelled A, B, C and D.
(ii) Name the parts of the ear responsible for transmitting impulses to the brain.
(iii) Name the part labelled above which is responsible for:
1. Static equilibrium. 2. Dynamic equilibrium. 3. Hearing
(iv) Name the audio receptor cells which pick up vibrations.
(v) Name the fluid present in the inner ear.
(i) Name the parts labelled A, B, C and D.
(ii) Name the parts of the ear responsible for transmitting impulses to the brain.
(iii) Name the part labelled above which is responsible for:
1. Static equilibrium. 2. Dynamic equilibrium. 3. Hearing
(iv) Name the audio receptor cells which pick up vibrations.
(v) Name the fluid present in the inner ear.
An experiment was set up as shown in the figure alongside. Look at the figure and answer the following questions:
( i) What is the objective of this experiment?
( ii ) Which plant is used in this experiment?
( iii ) Which gas is evolved in this process?
( iv ) What will happen to the rate of evolution of this gas if a pinch of sodium
bicarbonate is added?
(v ) What will happen if the apparatus is kept in dark?
( i) What is the objective of this experiment?
( ii ) Which plant is used in this experiment?
( iii ) Which gas is evolved in this process?
( iv ) What will happen to the rate of evolution of this gas if a pinch of sodium
bicarbonate is added?
(v ) What will happen if the apparatus is kept in dark?
What is the significance of the testes being located in scrotal sacs outside the abdomen. Can there be any abnormal situation regarding their locations? If so, what is that and what is the harm caused due to it?
Most leaves have the upper surface more green and shiny than the lower one. Why?
What is the difference between diffusion and osmosis? State the significance of osmosis in plant physiology.
What are the secondary sexual characters in the human male and female respectively?
Given below is a schematic diagram to illustrate some aspects of photosynthesis.
a.Fill up the gaps, in blank spaces (1-4), by writing the names of the correct items.
b.What phenomenon do the thick arrows A and B indicate?
a.Fill up the gaps, in blank spaces (1-4), by writing the names of the correct items.
b.What phenomenon do the thick arrows A and B indicate?
The below diagram represents the vertical view of the human female reproductive system.
(i) Label the parts indicated by the guidelines 1 to 8.
(ii) How does the uterus prepare for the reception of a zygote?
(iii) What happens to the uterus if fertilization takes place?
(iv) What happens to the uterus if fertilization has failed to take place?
(i) Label the parts indicated by the guidelines 1 to 8.
(ii) How does the uterus prepare for the reception of a zygote?
(iii) What happens to the uterus if fertilization takes place?
(iv) What happens to the uterus if fertilization has failed to take place?