681. Benzoepin, Parrysulfan, Phaser, Thiodan, Thionex etc. are the names of which among the following pesticides?
A. Kepone
B. Paraquat
C. Endosulfan
D. Toxaphene
✅ The correct answer is option C.
SSC
682. 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.
683. The colors in the fine cut diamond are because of which among the following?
A. Variance in transparency of diamond
B. Variance in index of refraction
C. Presence of Impurities
D. Existence of definite planer layers
✅ The correct answer is option C.
684. 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.
685. Polymetallic Modules (PMN) predominantly contain_____?
A. Calcium
B. Magnesium
C. Manganese
D. Copper
✅ The correct answer is option C.
686. 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.
687. Consider the following particles in relation to the matter: π-Meson (Pi-meson) Photon Which among the above are considered to be mass less and charge less?
A. Only 1
B. Only 2
C. Both 1 & 2
D. Neither 1 nor 2
✅ The correct answer is option B.
688. The first metal to be used by man was:
A. Aluminum
B. copper
C. Iron
D. Silver
✅ The correct answer is option B.
689. Which among the following minerals is also known as Horn Silver?
A. Silver Iodide
B. Silver Chroride
C. Zinc Phosphate
D. Silver Sulphide
✅ The correct answer is option B.
690. 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.