Related Questions

There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km.
A 0.05
B 1
C 6.5
D 15
Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
A CO
B SO2
C NOx
D CFC (chloro fluoro carbons)
Pharmacists recently conducted a study with respect to the reasons their customers purchased eye drops to soothe eye dryness. Dry eyes were more frequently experienced by customers who wore contact lenses than by custorners who did not wear contact lenses. The pharmacists concluded that wearing contact lenses, by itself, can cause contact wearers to have dry eyes.
A An inherited condition can cause both weak eyesight and dry eyes
B Physical exertion causes dry eyes in many people who wear contact lenses.
C Most people who have dry eyes do not wear contact lenses.
D Most people who wear contact lenses do not have dry eyes.
Plane P take off at 2:00 am and flies at a constants speed of Xmph. Plane Q takes off at 3:30 am and flies the same forte as plane p but travels at a constant X, how many hours after 3:30 am will plane Q overtake plan P?
A 1.5x/y +0.5
B 2
C 4
D 5
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)
A P = W tanα
B P = W tan (α + φ)
C P = W (sinα + μcosα)
D P = W (cosα + μsinα)
ট্রপোমণ্ডলের বৈশিষ্ট্য কোনটি? (Which is the property of the Troposphere?)
A উচ্চতা বৃদ্ধির সাথে বায়ুর উষ্ণতার বৃদ্ধি (Increase of air temperature with increasing altitude)
B বেতার তরঙ্গের প্রতিফলন (Reflection of radio waves)
C অতিবেগুনী রশ্মির শোষণ (Absorption of ultraviolet rays)
D উচ্চতা বৃদ্ধির সাথে বায়ুর তাপমাত্রা হ্রাস (Decrease of air temperature with increasing altitude)
What is troposphere?
A Portion of air
B Portion of water
C Lowest layer of atmosphere where we survive
D Portion of sky
Troposphere is the hottest part of the atmosphere because
A It is closest to the Sun
B There are charged particles in it
C It is heated by the Earth's surface
D Heat is generated in it
Troposphere is the most warm part of the atmosphere because
A It is closer to the Sun
B It contains charged particles
C It gets warm from the heat of the surface ofthe Earth
D It produces heat
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is
A helium
B ozone
C oxygen
D methane

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