581. Which among the following is the objective of the Methyl tert-butyl ether (MTBE) mixing with Petroleum?
A. Raise Octane Number
B. Antioxidant Stabilizer
C. Lead Scavanger
D. Fuel Dye
✅ The correct answer is option A.
SSC
582. A molecule is a smallest part of matter which possesses all properties of original matter. A molecule is electrically _________?
A. Positve
B. Negative
C. either positive or negative
D. neutral
✅ The correct answer is option D.
583. Which among the following is true about solubility of ―Lipids‖?
A. They are soluble in water but insoluble in organic solvents
B. They are insoluble in water but soluble in organic solvents
C. They are soluble in water as well as organic solvents
D. They are insoluble in water as well as organic solvents
✅ The correct answer is option B.
584. When a tubelight breaks, a cracking sound is produced because ____?
A. Pressure inside the lamp is less than atmospheric pressure
B. Pressure inside the lamp is more than atmospheric pressure
C. The lamp is filled with reactive gases
D. The lamp is filled with mercury vapour
✅ The correct answer is option A.
585. Galena & Litharge are ores of which of the following metals?
A. Mercury
B. Zinc
C. Copper
D. Lead
✅ The correct answer is option D.
586. The Chemical formula of Graphite is _________?
A. C
B. C2
C. C4
D. C6
✅ The correct answer is option A.
587. In the manufacture of Vanaspati ghee from vegetable oils, which among the following gas is used?
A. N2
B. CO2
C. H2
D. Ne
✅ The correct answer is option C.
588. Graphite, Carbon and Diamonds are _________?
A. Isotopes
B. Isomers
C. Isotones
D. Allotropes
✅ The correct answer is option D.
589. Which among the following gas was leaked at Bhopal during the Bhopal gas tragedy at 2- 3 December 1984?
A. Methyl isocyanide
B. Methyl isocyanate
C. methyl isochloride
D. methyl isochlorate
✅ The correct answer is option B.
590. Bleaching Powder is a compound of _______?
A. Calcium
B. Sodium
C. Magnesium
D. Sulphur
✅ The correct answer is option A.