1606: Assertion (A) :
60° - 65° latitudes in both the hemispheres have a low pressure belt instead of high pressure.
Reason (R) :
The low pressure areas are permanent over oceans rather than on land.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
1607: Which are the materials generally employed as solder in soldering operation in elections.
(a) Iron and tin
(b) Lead and tin
(c) Aluminum and lead
(d) Aluminum and iron
1608: Which of the following statements is/are correct?
Viruses can infect
1. bacteria
2. fungi
3. plants
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1609: Organic Light Emitting Diodes (OLEDs) are used to create digital display in many devices.
What are the advantages of OLED displays over Liquid Crystal displays?
1. OLED displays can be fabricated on flexible plastic substrates.
2. Roll-up displays embedded in clothing can be made using OLEDs.
3. Transparent displays are possible using OLEDs.
Select the correct answer using the code given below
(a) 1 and 3 only
(b) 2 only
(c) 1, 2 and 3
(d) None of the above statements is correct
1610: Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?
(a) Microscope
(b) Lead plate
(c) Scintillation counter
(d) Spectrophotometer