Learn information about general science :
1) Who was the scientist who said “atoms of some elements are not identical”?
– F.W Aston
2) Who was the first scientist to observe ultraviolet rays?
– Johann Wilhelm Ritter- 1801
3) Which of the seven colors has the highest and lowest speed of light?
– Most red and most purple
4) Explain the definition of light?
– “Electromagnetic radiation that produces sensation in the eye is light.”
5) Greek word ‘;nano’; What does mean?
– Dwarf, Thinguji, Dwarf. Nano means mathematically: 1,000,000,000th of a meter. 1 nano meter (nm) =10 ^-9
6) How many bones are there in the human body?
– Total :213
7) How many bones are there in clavicle, hip joint, ear and palate?
– In Skandhamekhala : 04,
– Buttock Front:02,
– In the ear :03
– (in both ears :06 ),
– Palate:01
8) How many bones are there in the foot?
– (Both leg bones : 60 ) Hip bone : 01,
– Knee joint :01,
– Between knee and ankle :02,
– Ankle bone :07,
– Bones of the sole of the foot :05,
– Finger bones :14
9) How many bones are there in the hand?
– (Total bones of both arms :60) From shoulder to elbow :01,
– Elbow to wrist :02,
– Carpal bones :08,
– Palm bones :05,
– Finger bones :14
10) How many vertebrae are there in the spine?
– 33 beads
11) How many bones are there in the human rib cage?
– Twelve pairs of ribs :24,
-bone between the ribs :01
12) How many bones are there in human skull?
– Head bones: 08, facial bones: 14
13) How much time does earth take to make one revolution on its axis?
– Takes 23 hours and 56 minutes.
14) Which planet takes the longest time to orbit the Sun?
– Pluto (248 years)
15) Which planet takes the least time to orbit the Sun?
– Mercury (88 days)
16) When does lunar eclipse occur?
– Lunar eclipses occur when the Earth comes between the Sun and the Moon.
– Lunar eclipse occurs on Poonam day.
17) How does a solar eclipse occur?
– A solar eclipse occurs when the moon comes between the sun and the earth. A solar eclipse occurs on a new moon day.
18) State the amount of gases in the atmosphere?
– Nitrogen: 78%, Oxygen: 21%, Helium, Neon, Argon, Ozone, Xenon, Radon, Water Vapor and Particulate Matter: 0.96%, Carbon Dioxide: 0.04%
19) What is the approximate speed of a human sneeze?
– 160 -170 km
20) How much does head hair grow every month?
– 11-12 inches
21) Applying a force on an object does not change its shape?
– in mass of matter
22) What does the interior of a candle flame look like?
– Brown
23) What is mainly present in biogas?
– Methane gas
24) What is the maximum temperature that human skin can tolerate?
– 60* cm.
25) Electric bulb works according to which principle?
– Conversion of electrical energy into light energy
26) CV Raman received the Nobel Prize in which field?
– Physical Science
27) What was the first life on earth?
– In the water
28) Whose autobiography is this? “The Man Who Knew Infinity”.
– Srinivasa Ramanujan
29) Which organ of the body excretes water, fat and metabolic waste?
– Skin
30) Who invented the supercomputer?
– J.H. Tussell
31) What exactly is X-ray?
– Electromagnetic waves
32) T.V. In which scene on the screen is formed by the combination of three colors?
– Red, Green, Blue
33) Which factor plays a role in determining the sex of a child?
– Chromosome of the father
34) ICs used in computers and electronic items are made of what?
– from silicon
35) What kind of container is used to fill sulfuric acid quickly?
– Glass vessel
36) Which material is used as a semi-conductor?
– Silicone
37) What is the speed of sound?
– 346 m/sec
38) The weight of an object is less at the equator than at the Earth’s poles.
– Because the radius of the polar region is less than the radius of the equator of the earth, hence the gravity is more on the polar region.
39) A piece of ice floats in water but sinks in alcohol?
– A piece of ice is lighter than water and heavier than alcohol.
40) Which endocrine system is necessary for the digestion of milk?
– Renin
41) State the main components of pearl?
– Calcium carbonate and magnesium carbonate.
42) Who manufactures Vitamin D for the body?
– Skin
43) Which gas makes lime water milky?
– Carbon dioxide