1. : The copper is refined by ___
(A) Zone Refining
(B) Oxidation
(C) Roasting
(D) Electrolysis
2. : What is Mercury called?
(A) Shine Silver
(B) Slow Silver
(C) Quick Silver
(D) Slippery Silver
3. : The kind of soil that we treat with the gypsum for making it suitable for cropping is ___
(A) Acidic
(B) Alkaline
(C) Waterlogged
(D) Soil with excessive clay content
4. : What is the ratio of pure gold in the 18 carat gold?
(A) 0.5
(B) 0.75
(C) 0.85
(D) 0.9
5. : An element that is required for the solar energy conversion is ___
(A) Ultra-pure carbon
(B) Beryllium
(C) Silicon
(D) Tantalum
6. : Which element does not occur in nature but we can make it artificially?
(A) Uranium
(B) Plutonium
(C) Radium
(D) Thorium
7. : The accumulation of what causes Muscle fatigue?
(A) Lactic acid
(B) Uric acid
(C) Oxalacetic acid
(D) Fyruvie acid
8. : The vitamin that is synthesized in the body by intestinal bacteria is ___
(A) Vitamins B1
(B) Vitamins B12
(C) Vitamins K
(D) Vitamins E
9. : The Vitamin that gets destroyed on heating is __
(A) B
(B) E
(C) C
(D) K
10. : What is the total energy of a revolving electron that is in an atom?
(A) I Will always be positive
(B) Can have any value above zero
(C) Can never be positive
(D) Cannot be negative
11. : Which growth is affected by the Virus of AIDS?
(A) Hemoglobin
(B) RBCs in blood
(C) Grey Cells in blood
(D) T cells in blood
12. : What is the vitamin that is excreted by humans in urine called?
(A) Vitamin C
(B) Vitamin B
(C) Vitamin B12
(D) Vitamin A
13. : The metal that is occurred in the free state is _____
(A) Iron
(B) Lead
(C) Mercury
(D) Copper
14. : The Magnalium is an alloy of what?
(A) Magnesium and Lead
(B) Aluminium and Magnesium
(C) Aluminium and Zinc
(D) Aluminium and Mercury
15. : What is the major function of the kidney?
(A) To control blood pressure
(B) To control body temperature
(C) To help in digestion of body
(D) To remove waste from the blood
16. : What is the energy called that is stored in a dam?
(A) Kinetic energy
(B) Potential energy
(C) Electrical energy
(D) None of these
17. : When the temperature of the medium is the rise, the speed of light ____
(A) Decrease
(B) Increase
(C) First, decrease then increase
(D) Remain the same
18. : What is the AIDS virus?
(A) Single-stranded DNA
(B) Single-stranded RNA
(C) Double-stranded RNA
(D) Double-stranded DNA
