Which of the following eco system covers the largest area of earth surface?

A Desert ecosystem
B Mountain ecosystem
C Freah water ecosytem
D Marine ecosystem

Correct Answer: Marine ecosystem

Hints - পৃথিবীর পৃষ্ঠের বেশিরভাগ অংশ জুড়ে রয়েছে মেরিন ইকোসিস্টেম বা সামুদ্রিক বাস্তুসংস্থান। সঠিক উত্তর - Marine ecosystem.
Bissoy MCQ
#সাধারণ জ্ঞান #পৃথিবী সম্পর্কিত তথ্য #BASIC Bank Ltd #BASIC Bank Ltd - Assistant Officer (Cash) - 17.01.2014

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পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
A 36 N and 81 N
B 36 N and 40.5 N
C 36 N and 20.25 N
D 98 and 40.5 N
E 81 N and 81 N
A body has a weight W on the surface of Earth. What is its weight on a planet whose mass is 15 times that of Earth and a radius that is 4 times that of the earth?
A 15\/4 W
B 16\/9 W
C 16\/7 W
D 16\/15 W
একজন অ্যাথলেট পৃথিবীতে দীর্ঘ লাফ দিয়ে সর্বোচ্চ 4 m দূরত্ব যেতে পারেন। এই অ্যাথলেট চাঁদের পৃষ্ঠে দীর্ঘ লাফ দিয়ে সর্বোচ্চ কত দূর যেতে পারবেন ? [পৃথিবীর ভর ও ব্যাসার্ধ চাঁদের ভর ও ব্যাসার্ধের যথাক্রমে 81 গুণ ও 4 গুণ] (An athlete can cross a maximum distance 4 m by a long jump on earth surface. What is the maximum distance the athlete can cross by a long jump on moon's surface? [The mass and radius of earth are 81 times and 4 times of moon's mass and radius, respectively.])
A 0.79m
B 9 m
C 20.25 m
D 16 m
E 32.35 m
If radius of Earth is 4 times that of Moon, then how many times the surface area of the Moon is that of the Earth?
A 4
B 16
C 46
D 8
If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight 'w' per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is
A $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$
B $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$
C $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}{\left^2}$$
D $${\text{h}} = \sqrt {\frac{{\text{W}}}{{{\text{Aw}}}}} {\left^2}$$
A & B start walking in opposite directions. A covers 3 milles and B covers. Then A turns right and walks 4 miles and B turns left left and walks 3 miles. How far is each from starting point?
A 8 miles
B 5 miles
C 4 miles
D 6 miles

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