[To make difference in pre...] Why the wings of an aeroplane are shaped with lower surface being flat and the upper surface being c

For Competitive Exams

Why the wings of an aeroplane are shaped with lower surface being flat and the upper surface being curved?

To reduce vibration

To make difference in pressure to lift the plane vertically

To accommodate more passengers in the wing

To strengthen the wheels fitted in wings

Additional Questions

Match the folloing:

Famous Indian Scientist	Their Contribution
(a) C.V. Raman	1. Ultra Short Radio Waves
(b) J.C. Bose	2. Thermal Ionization
(c) M.IN. Saha	3. Quantum Statistics
(d) S.N. Bose	4. Inelastic Scattering of Light

(a) (b) (c) (d)

Which one of the following is not an allotrope of carbon?

Match List I with List II, select the correct answer using the codes given in the options:

List I	List II
(a) First Generation Pesticides	1. Pheromones
(b) Second Generation Pesticides	2. Juvenile Hormones
(c) Third Generation Pesticides	3. Pyrethriins
(d) Fourth Generation Pesticides	4. Organo phosphates

Match the following:

Which one of the following is an example for X-linked chromosome inheritance?

What is the other name for Leprosy?

Name the visually challenged person who got selected in 2015 Civil Service Examination

The device which can store more data among the following is

EDGE stands for

Which is the author of the book "The Past Before Us"?

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