Ch4
What does a virus cause?
A disease
What colour does an extremely strong acid turn when red cabbage juice is added?
Deep red
Name two places where echoes are unwanted.
Music rooms and theaters.
Name 5 processes in the water cycle.
Evaporation, Transpiration, Condensation, Precipitation, and Collection.
Where was the exact time in a year mentioned?(365.2563627 Earth days)
Chapter 1 of the Surya Siddhanta (सूर्य सिद्धांत)
What is the genetic material called inside a virus?
RNA/DNA
What the approximate pH of a substance that turns green after a natural indicator is mixed with it?
pH +7
Define echolocation
How many elements can be naturaly found on Earth?
94
Andromeda Galaxy
Name all 7 characteristics of living organisms.
Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition
Are there more metals or non-metals in the periodic table?
metals
Explain how fishing boats use echoes to their advantage
The speed of sound underwater is 1500m/s.
'Distance = speech × time' In this equasion: speed is contant, and distance depends on time which can vary.
Fill in the blank given below:
A solid has directly been converted into a gas through a process know as __________.
Sublimation.
Name the supermassive blackhole at the center of our galaxy.
Sagittarius A
What is a cat called in scientific language?
Felis Catus
Fill in the blank given below:
A substance that can destroy living tissue is known as a _________ material.
Corrosive
Is there any sound in space?
Yes there is, only it's extremely faint.
What is the symbol for the element used in pencil nibs?
Pb(lead)
How many Earths can fit inside the sun?
13,00,000 (thirteen lakh)
What is the name of the virus that cause COVID 19?
SARS-CoV-2
What 4 elements are mixed to get the alloy used for making aeroplanes?
Aluminium, Copper, Magnesium, and Manganese.
Name the two continents of Earth 15,00,00,000(150million/15crore) years ago.
Gondwana and Laurasia
Name any 6 states of matter.
Solid, Liquid, Gas, Plasma, Bose-Einstein Condensate, Fermionic Condensate, Superfluid, Supersolid, Degenerate Matter, Quark-Gluon Plasma, Supercritical Fluid, Excitonium, Time Crystals, Photonic Matter, String-Net Liquid, Dropleton, Jahn-Teller Metal, Quantum Spin Hall State, Quantum Spin Liquid, Rydberg Polaron, Superconductivity, Liquid Crystal.
What is the 2nd nearest star to Earth and approximately how far is it?
Proxima Centauri, ~4.246 light years away