- 1
- 1.6
- 2.0
- 2.3
- a
-
0.8-0.3+0.5=1
- 5 Minutes
- 5.5 Minutes
- 6.5 Minutes
- 7 Minutes
- b
-
60/16
3.75 sec
88*3.75=330 sec=5.5 Minutes
- 50
- 60
- 45
- 35
- a
-
20 Liters = 240 km
1 Liter=240/20
12 Km
600/12=50
- Decomposition
- Reduction
- Oxidation
- Displacement
- c
-
Rusting is caused by oxidation in the presence of air, moisture or water.
- 7
- 8
- 9
- 10
- b
-
Oxygen is represented by “O”.
Oxygen was discovered by Joseph Priestly in 1774.
- Heat Energy
- Electrical Signals
- Microwaves
- Optical Signals
- b
- 7
- 8
- 9
- 10
- a
-
The symbol of Nitrogen is “N”.
Nitrogen was discovered by Daniel Rutherford.
- Sand & Salt
- Quartz & Mica
- Sand & Silicate
- None of these
- c
- Lewis
- Waterman
- Sir Frank Whittle
- Gottle Dalmer
- c
-
Originally, Jet Engine was invention of Sir Frank Whittle, Hans Von Ohain and Albert Fono.
First Jet Engine was invented in 1930.
