571. Cobalt oxide is used to impart which color to glass?
A. Brown
B. Blue
C. Red
D. Yellow
✅ The correct answer is option B.
SSC
572. Which among the following would cause the bright red colur due to bursting of crackers?
A. Strontium
B. Sodium
C. Suphur
D. Magnesium
✅ The correct answer is option A.
573. Which among the following are used as components to produce Nitrolim, a widely used fertilizer in past?
A. Nitrogen & Limestone
B. Calcium Carbide and Nitrogen
C. Calcium Carbide & Carbon
D. Calcium Carbide and Limestone
✅ The correct answer is option B.
574. Reserpine is an example of which kind of drug?
A. Narcotic
B. Anti-histamine
C. Tranquillizer
D. None
✅ The correct answer is option C.
575. Which among the following elements are generally find in free state?
A. Group 11 elements
B. Group 12 elements
C. Group 13 elements
D. Group 14 elements
✅ The correct answer is option A.
576. Whenever an alkali metal such as Lithium or Sodium reacts with water , which among the following gas is produced?
A. Oxygen
B. Hydrogen
C. Ozone
D. Carbondioxide
✅ The correct answer is option B.
577. Phenolphthalein is used in chemistry as a ______?
A. Solvent
B. Dye
C. Catalyst
D. Detergent
✅ The correct answer is option B.
578. The most important contributor of sea salt is ____?
A. Rivers
B. Salty Rocks at bottom of sea
C. Aquatic animals in Sea
D. Atmosphere around sea
✅ The correct answer is option A.
579. A neutron , an electron, a proton and an alpha particle are moving with the same kinetic energy. Which of the following is correct order of their speeds?
A. Alpha Particle, Neutron, Proton, Electron
B. Electron, Proton , Neutron, Alpha Particle
C. Alpha Particle, Proton, Neutron, Electron
D. Neutron, Proton, Alpha Particle, Electron
✅ The correct answer is option A.
580. Calcium Magnesium Silicate is commonly called as ________?
A. Asbestos
B. Borax
C. Baking Soda
D. Washing Soda
✅ The correct answer is option A.