A. Oxygen and helium
B. Oxygen and hydrogen
C. Oxygen and carbon dioxide
D. Oxygen, Helium & nitrogen
✅ The correct answer is option D.
The minimum temperature at which a combustible substance catches fire is called:
A. fireless temperature
B. ignition temperature
C. static temperature
D. optimum temperature
✅ The correct answer is option B.
Consider the following statements regarding Graphene and Fullerene: 1. Graphene is 2 dimensional , Fullerene is generally 3 dimensional 2. Graphene is SP2 allotrope of Carbon, while Fullerene is SP3 allotrope of Carbon 3. Graphene does not dissolve in petrol but fullerenes dissolve Which among the above statements is / are correct?
A. Only 1 is correct
B. Only 2 is correct
C. Only 3 is correct
D. 1 & 3 are correct
✅ The correct answer is option D.
Haber Process is used to produce which among the following?
A. Potash
B. Ammonia
C. Urea
D. Nitrates
✅ The correct answer is option B.
If a Hydrogen atom is removed from a hydrocarbon of Benzene group, the remaining residue is called _________?
A. Alkyl
B. Aryl
C. Arene
D. Azene
✅ The correct answer is option B.
Which among the following kinds of Chemical reactions cause the rocks turn red or yellowish?
A. Hydration
B. Oxidation
C. Carbonation
D. Exfoliation
✅ The correct answer is option B.
Which among the following is the unit of the scale used for measurement of the spicy heat of a chili pepper?
A. Smith
B. Wright
C. Orville
D. Scoville
✅ The correct answer is option D.
Every kilogram of seawater has approximately how much dissolved salts?
A. 1 gm
B. 0.35 gms
C. 3.5 gms
D. 35 gms
✅ The correct answer is option D.
Gypsum is added to Cement so that, _________?
A. setting of cement can be fastened
B. setting of cement can be slowed
C. Cement strength can be improved
D. Cement strength can be controlled
✅ The correct answer is option B.
The color ―Carmine‖ is a shade of which among the following colors?
A. Red
B. Blue
C. Yellow
D. Green
✅ The correct answer is option A.