DATE-24-12-2021 HOME LEARNING ALL VIDEO LINK USEFUL FOR ALL SCHOOL TEACHER AND STUDENTS
તા: 24/12/2021 નું હોમ લર્નિંગ ડાયરેક યુટ્યુબ ના માધ્યમથી.
વિદ્યાર્થી મિત્ર તમારા ધોરણની નીચે આપેલી લિંક ખોલીને આજનું ઓનલાઈન શિક્ષણ મેળવો યુટ્યુબ ના માધ્યમથી.
તા- 24/12/2021 ધોરણ-1 નો વિડિયો જોવા અહી ક્લિક કરો.
તા- 24/12/2021 ધોરણ-2 નો વિડિયો જોવા અહી ક્લિક કરો.
તા- 24/12/2021 ધોરણ-3 નો વિડિયો જોવા અહી ક્લિક કરો.
તા- 24/12/2021 ધોરણ-4 નો વિડિયો જોવા અહી ક્લિક કરો.
તા- 24/12/2021 ધોરણ-5 નો વિડિયો જોવા અહી ક્લિક કરો.
તા- 24/12/2021 ધોરણ-6 નો વિડિયો જોવા અહી ક્લિક કરો.
તા- 24/12/2021 ધોરણ-7 નો વિડિયો જોવા અહી ક્લિક કરો.
તા- 24/12/2021 ધોરણ-8 નો વિડિયો જોવા અહી ક્લિક કરો.
English Test
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1. There is nothing to match the ............... when crackers go off in the night sky with a loud bang and a brilliant shower of colours.
excited
excitement
exciting
2. The physics and chemistry of fireworks is as ..................as the sound and the light they emit.
interesting
interested
interest
3. The science of fireworks is ................called, 'pyrotechnics'.
technical
technics
technically
4. The household match is considered a special pyrotechnic device, ...............all the pyrotechnic effects are found in it.
so
as
while
5. Some historians say that 'black powder', the basic material used in fireworks, ...................invented in India.
is
are
was
were
6. Shukranti, written more than two thousand years ago, has references to weapons similar to guns and ...................weapons.
projectile
project
projected
7. The Chinese ................generally considered the pioneers of pyrotechnics.
is
are
8. An English monk, Roger Bacon, revealed the ..................for "black powder".
formula
formulation
formulated
9. He considered it ..............a dangerous substance that he wrote of it in a code language.
same
such
so
10. The basic formula of the black powder, or gun powder, ...................unchanged for centuries.
remained
has remained
remains
________________________________
Answers
1. There is nothing to match the excitement when crackers go off in the night sky with a loud bang and a brilliant shower of colours.
2. The physics and chemistry of fireworks is as interesting as the sound and the light they emit.
3. The science of fireworks is technically called, 'pyrotechnics'.
4. The household match is considered a special pyrotechnic device, as all the pyrotechnics effects are found in it.
5. Some historians say that 'black powder', the basic material used in fireworks, was invented in India.
6. Shukranti, written more than two thousand years ago, has references to weapons similar to guns and projectile weapons.
7. The Chinese are generally considered the pioneers of pyrotechnics.
8. An English monk, Roger Bacon, revealed the formula for "black powder".
9. He considered it such a dangerous substance that he wrote of it in a code language.
10. The basic formula of the black powder, or gun powder, has remained unchanged for centuries.
________________________________
English Test
________________________________
11. Experts say that this might be the only chemical product ................using the same age old proportions and manufacturing techniques.
but
still
yet
12. However, with the development of modern chemistry, light and colour effects have become common in fireworks.
effects
effective
affects
13. Incandescent light is produced when a substance is ...............so much that it begins to glow.
heat
heating
heated
14. Heat causes the substance .................. hot and glow.
become
to become
became
15. The .....................behind any firework is that when heat is applied to fuel (the gun powder), it burns using oxygen.
principal
principle
principles
16. The .....................danger of pyrotechnics is that it deals with fire.
great
greater
greatest
17. The industry is ........................for its accidents, whether in the U.S.A., Japan or India.
notorious
notoriously
notoriety
18. Scientists are looking ..................ways of making fireworks safer.
after
for
into
19. In India, fireworks .............be imported from China.
may
used to
should
20. During the Second World War, these imports were stopped.
importer
imports
imported
________________________________
Answers
11. Experts say that this might be the only chemical product still using the same age old proportions and manufacturing techniques.
12. However, with the development of modern chemistry, light and colour effects have become common in fireworks.
13. Incandescent light is produced when a substance is heated so much that it begins to glow.
14. Heat causes the substance to become hot and glow.
15. The principle behind any firework is that when heat is applied to fuel (the gun powder), it burns using oxygen.
16. The greatest danger of pyrotechnics is that it deals with fire.
17. The industry is notorious for its accidents, whether in the U.S.A., Japan or India.
18. Scientists are looking for ways of making fireworks safer.
19. In India, fireworks used to be imported from China.
20. During the Second World War, these imports were stopped.
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DATE-24-12-2021 HOME LEARNING ALL VIDEO LINK USEFUL FOR ALL SCHOOL TEACHER AND STUDENTS