A. Only 1
B. Only 1 & 2
C. Only 3
D. Only 1 & 3
✅ The correct answer is option A.
Consider the following statements: 1. Copernicium is at present highest-numbered element recognized by IUPAC 2. Copernicum has been synthesized in the lab by a nuclear reaction of Zinc and Lead Isotopes Which among the above statements is / are correct?
A. Only 1 is correct
B. Only 2 is correct
C. Both 1 & 2 are correct
D. Neither 1 nor 2 are correct
✅ The correct answer is option C.
The first metal to be used by man was:
A. Aluminum
B. copper
C. Iron
D. Silver
✅ The correct answer is option B.
For respiration in deep sea, divers use mixture of:
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.