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Preparation for the BCS

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BCS preparation part 1 ০১ . বর্তমানে বাংলাদেশে স্থলবন্দর কতটি ? উত্তরঃ ২১টি । [ সর্বশেষ স্থল বন্দর - শেওলা , সিলেট ] ০২ . কোন বছর আমেরিকার স্বাধীনতা ঘোষণা করা হয়েছিল ? উত্তরঃ ১৭৭৬ সালে । ০৩ . ২০১৫ সালের বিশ্ব খাদ্য পুরস্কার লাভ করে কোন বাংলাদেশী ? উত্তরঃ স্যার ফজলে হাসান আবেদ । ০৪ . বাংলাদেশে বিনিয়োগকারী সর্ববৃহৎ বিদেশী সংস্থা ' ইয়ংওয়ান ' কোন দেশের ? উত্তরঃ দক্ষিণ কোরিয়া । ০৫ . উইকিলিকস্ কোন দেশের রাজনৈতিক দল ? উত্তরঃ অস্ট্রেলিয়া । ০৬ . বসনিয়া সংকট সমাধান হয়েছিল কোন চুক্তির মাধ্যমে ? উত্তরঃ ডেটন চুক্তি । ০৭ . আল - জাজিয়া স্যাটেলাইট টেলিভিশনের প্রধান সম্প্রচার কেন্দ্র কোন দেশে অবস্থিত ? উত্তরঃ কাতারে । ০৮ . বিশ্বের কোন নগরটি দুটি মহাদেশে বিস্তৃত ? উত্তরঃ ইস্তাম্বুল । ০৯ . ' রাজবাড়ী ' জেলার পূর্ব নাম কি ছিল ? উত্তরঃ গোয়ালন্দ । ১০ . ' স্বপ্নাতুর কবি ' বলা হয় কাকে ? উত্তরঃ ইসমাইল হোসেন সিরাজী কে ।

Inventions

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By Md_Jamal_Molla








1.
What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955?

A. Microwave oven
B. Remote control
C. VCR
D. Calculator
Answer & Explanation
Answer: Option B

Explanation:

The first wireless remote control for television was called Flashmatic. (Remember when you had to get up to change the channel?)


2.
What Benjamin Franklin invented?

A. Bifocal spectacles
B. Radio
C. Barometer
D. Hygrometer
Answer & Explanation
Answer: Option A

Explanation:

Invented in 1760.

A list of Benjamin Franklin's inventions reveals a man of many talents and interests. It was the scientist in Ben that brought out the inventor. His natural curiosity about things and the way they work made him try to find ways to make them work better.

Ben had poor vision and needed glasses to read. He got tired of constantly taking them off and putting them back on, so he decided to figure out a way to make his glasses let him see both near and far. He had two pairs of spectacles cut in half and put half of each lens in a single frame. Today, we call them bifocals.


3.
This part-time race car driver invented the bucket seat in 1969. Who was he??

A. Steve McQueen
B. Harrison Frazier
C. Paul Newman
D. John Wayne
Answer & Explanation
Answer: Option A

Explanation:

McQueen died in 1980 from a rare form of lung cancer.


4.
What plaything was invented by Joe McVicker in 1956?

A. Silly Putty
B. Etch-A-Sketch
C. Lite-Brite
D. Play-Doh
Answer & Explanation
Answer: Option D

Explanation:

The stuff was originally intended to be wallpaper cleaner! (I used to eat this as a child)

5.
Who was the first American female to patent her invention, a method of weaving straw with silk?

A. Marjorie Joyner
B. Margaret Knight
C. Amanda Jones
D. Mary Kies
Answer & Explanation
Answer: Option D

Explanation:

Mary was not the first American woman inventor to be sure, there were many female inventors before her, but they never bothered to get a patent.


6.
Who invented Gramophone?

A. Michael Faraday
B. Fahrenheit
C. Sir Alexander Graham Bell
D. Thomas Alva Edison
Answer & Explanation
Answer: Option D


7.
Who invented Internal Combustion Engine?

A. Roger Bacon
B. Karl Benz
C. Dr. Alan M. Turing
D. Otto
Answer & Explanation
Answer: Option D
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