16 . The working principle of a washing machine is based on
A.  Centrifugation
B.  Dialysis
C.  Reverse osmosis
D.  Diffusion
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17 . One astronomical unit is the average distance between:
A.  Earth and the Sun
B.  Earth and the Moon
C.  Jupiter and the Sun
D.  Pluto and the Sun
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18 . Which one the following port cities in Venezuela has been developed as an oil port?
A.  Caracas
B.  Maracaibo
C.  Maracay
D.  Carupano
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19 . Which one of the following polymers is widely used for making bullet proof material?
A.  Polyvinyl chloride
B.  Polyamides
C.  Polyethylene
D.  Polycarbonates
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20 . In India, markets in agricultural products are regulated under the:
A.  Essential Commodities Act, 1955
B.  Agricultural Produce Market Committee Act enacted by States
C.  Agricultural Produce Act, 1937
D.  Meat and Food Products Order, 1973
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21 . In which one among the following is the speed of sound maximum?
A.  Air at 0° C
B.  Air at 100° C
C.  Water
D.  Wood
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22 . A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive and O positive. The blood group of the adopted son is-
A.  O Positive
B.  A positive
C.  B positive
D.  Cannot be determined on the basis of the given data
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23 . Which one of the following weather conditions is indicated by a sudden fall in barometer reading.
A.  Stormy
B.  Calm weather
C.  Cold and dry weather
D.  Hot and sunny weather
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24 . Which of these key is not on the number keypad?
A.  Ctrl
B.  Delete
C.  Enter
D.  Num Lock
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25 . Under Digi-Dhan Vyapar Yojana which of the following medium is/are suitable for the transaction for merchants?
A.  Unstructured Supplementary Service Data (USSD)
B.  Aadhaar Enabled Payment System (AEPS)
C.  Unified Payment Interface (UPI)
D.  All of the above
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26 . Which one among the following is called philosopher's wool?
A.  Zinc bromide
B.  Zinc nitrate
C.  Zinc oxide
D.  Zinc chloride
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27 . Which one of the following type of micro organisms is most widely used in industries?
A.  Bacteria
B.  Bacteria and fungi
C.  Bacteria and algae
D.  Bacteria, micro algae and fung
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28 . Which of the following types is used by computed tomography employed for visualisation of the internal structure of human body?
A.  X-ray
B.  Magnetic waves
C.  Magnetic resonance
D.  Radio isotopes
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29 . Which country will host Commonwealth Games in 2018?
A.  New Zealand
B.  Australia
C.  Scotland
D.  Malaysia
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30 . Consider the following pairs:

1. Vitamin C

2. Vitamin D

3. Vitamin E

Which of the pairs given above is/ are correctly matched?
A.  1 and 2
B.  3 only
C.  1, 2 and 3
D.  None of the above
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