Page 366 - General Knowledge

GENERAL KNOWLEDGE 2019

21. A baby diaper, if tested with various solutions, will absorb maximum amount of which
among the following:
A. Distill Water
B. Drinking water
C. Hard water
D. Urine

22. Now a days, a little pack of Silica Gel (granular beads of Silica made from Sodium Silicate)
comes with many products to control humidity and avoid spoilage or degradation of some
goods. Which among the following property of Silica gel makes it useful for that purpose?
A. Silica gel molecules are hydrophilic with large surface area and so its molecules trap the
moisture
B. Silica gel is a Hygroscopic substance with large surface area so its molecules absorb the
moisture.
C. Silica gel molecules are with a portion that is charge-polarized and capable of hydrogen
bonding, thus bonds with the water molecules
D. The semi permeable pouch in which silica gel is placed absorbs the moisture which later
reacts with water.

23. Which among the following is the correct almost equivalent to 1 MMBTU Natural Gas ?
A. 1.054615 gigajoule
B. 0.1054615 gigajoul
C. 10.54615 gigajoule
D. 105.4615 gigajoule

24. Consider the following statements:
1. The space between the valence and conduction bands is zero in Graphene
2. This property of Graphene makes it an excellent transistor of commercial viability
Which among the above statements is/ are correct?
A. Only 1
B. Only 2
C. Both 1 & 2
D. Neither 1 nor 2

25. Pyrolusite, Braunite, Psilomelane and Rhodochrosite are the ores of which among the
following:
1. Manganese
2. Aluminium
3. Copper
Choose the correct option:
A. Only 1
B. Only 1 & 2
C. Only 3
D. Only 1 & 3

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