11.Which camera causes no parallax error?
[A] Viewfinder camera [C] Zoom digital camera
[B] Single lens reflect camera [D] Polaroid camera
12.Given notation of colors as Red (R), Blue (B), Orange (O), Green (G)
and Yellow (Y), arrange the colors in ascending order of frequency.
[A] R G Y B [C] R O Y G
[B] B Y O R [D] G Y O B
13. Which of the following is not a rare earth element?
[A] Samarium [C] Europium
[B] Cerium [D] Titanium
14.When we breathe, oxygen is reversibly bonded to which metal ion in the blood?
[A] Copper [C] Sodium
[B] Iron [D] Magnesium
15.Metal complexes are the active ingredient in many drugs for the treatment
of a multitude of diseases. Auranofin is a drug prescribed to patients with
rheumatoid arthritis. Auranofin is the metal complex of which metal ion?
[A] Gold [C] Platinum
[B] Silver [D] Copper
16.Dioctyltin maleate is added to PVC to stabilize the polymer. If the maleate anion
is represented by mal which of the following represents the correct formula for dioctyltin maleate?
[A] (C8H16)2Sn(mal) [C] (C8H18)2Sn(mal)
[B]2(C8H16)Sn(mal) [D] (C8H17)2Sn(mal)
17.A container of triphenlytin chloride has the following label (Figure 1).
What does this label signify?
[A] Toxic [C] Harmful
[B] Environmental Hazard [D] Poison
18.Why is our tap water fluoridated?
[A] To disinfect the water [C] To purify the water
[B] To prevent tooth decay [D] To kill mosquito larvae
19.The three allotropes of carbon are graphite, diamond and _______________.
[A] Buckminster [C] Fullerene
[B] Carbon fibre [D] Charcoal
20. Which isotope of uranium is used in a nuclear plant?
[A] 235U [C] 237U
[B] 236U [D]238U