MCQ
Which of the following is not responsible for causing global warming?
  • A
    Jet planes
  • Ozone layer
  • C
    Carbon dioxide
  • D
    Methane

Answer

Correct option: B.
Ozone layer
$i.$ Ozone layer acts as a shield which absorbs the harmful $UV$ rays from the sun and is found in the stratosphere.
$ii.$ Global warming is a phenomenon of climate change which is characterised by an increase in the average temperature of the Earth. It is directly linked to the increase of greenhouse gases like carbon dioxide and methane into the atmosphere.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The liquid metal at room temperature:
There are three types of friction, namely sliding, static, and rolling. They are respectively denoted as $f _{\text {sl, }} f _{\text {st }}$ and $f _{\text {roll }}$. On a given surface, the given frictional forces are related as.
Which star is nearest to the earth?
Which of the following represents the correct match for items in Column $A$ with those in Column $B.$
 
Column A
 
Column B
$I$
Nylon
$(i)$
Thermoplastic
$II$
$PVC$
$(ii)$
Thermosetting plastic
$III$
Bakelite
$(iii)$
Fibre
Three candles $X, Y,$ and $Z$ are fixed on a table. A glass chimney is placed over candle $X$, and is rested on wooden blocks in a manner which allows the entrance of oxygen. To candle $Y$, a glass chimney is placed in such a way that it is simply rested on the table. For candle $Z$, a similar arrangement is made along with the placement of a glass plate over the chimney. Candle _____$i$____ bums freely. The flame of candle _____$ii$_____ will flicker off giving smoke, and that of candle _____$iii$_____ will simply go off.

The information in which alternative completes the given statements?
Identify the disease that is caused by protozoa.
Read the given paragraph, where few words have been italicised. The pineal gland secretes a hormone progesterone which helps to regulate sleep pattern. Thyroid glands release hormone which regulate the level of calcium in the blood with the help of calcitonin which is produced in the parathyroid glands. Select the correct option regarding the given paragraph.
$i.$ Positions of pineal and parathyroid should be interchanged.
$ii.$ Progesterone should be replaced by melatonin.
$iii.$ Parathyroid should not be replaced as it is correctly mentioned.
$iv.$ Positions of progesterone and calcitonin should be interchanged.
$v.$ Positions of thyroid and parathyroid should be interchanged.
Which of the following is not grown by transplantation?
In case of convex lens, as object is coming closer to the lens the image will $...........$