Skip to main content

Preparation for the BCS

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


1.
What furniture item was invented by California furniture designer Charles Prior Hall in 1968?

A. Sofa bed
B. Captain's chair
C. Waterbed
D. Hammock
Answer & Explanation
Answer: Option C


2.
The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?

A. Robert Oppenheimer
B. James B. Conant
C. Leslie R. Groves
D. Vannevar Bush
Answer & Explanation
Answer: Option A

Explanation:

Leslie R. Groves, however, was the military head of the project and the overall supremo, while Robert Oppenheimer was the scientific director. The world's first atomic bomb was exploded in the New Mexico desert on July 16, 1945.


3.
When was the first lawn mower invented?

A. 1830 B. 1854
C. 1835 D. 1849
Answer & Explanation
Answer: Option A

Explanation:

The first lawn mowers were not engine powered. Invented in 1830 by Edwin Budding of England, the mowers were turning blades on wooden sticks used to cut grass. Engine powered mowers were not invented until 1919 by an American Army colonel, who used the motor from a washing machine.


4.
In which decade were the first successful diode and triode vacuum tubes invented?

A. 1800s B. 1880s
C. 1890s D. 1900s
Answer & Explanation
Answer: Option D

Explanation:

In 1904, John Ambrose Fleming invented the first practical electron tube called the 'Fleming Valve', which is a diode rectifier. In 1906, Lee de Forest invented the audion later called the triode, which provided signal amplification.


5.
Who is the English physicist responsible for the 'Big Bang Theory'?

A. Albert Einstein
B. Michael Skube
C. George Gamow
D. Roger Penrose
Answer & Explanation
Answer: Option C

Explanation:

George Gamow. Gamow, who died in 1968, was a physicist, who published "Thirty Years that Shook Physics".

6.
What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?

A. Frisbee
B. Monopoly
C. Ouija board
D. Ping Pong
Answer & Explanation
Answer: Option C

Explanation:

The board was invented by Isaac and William Fuld. The word 'Ouija' comes from the French and German words for 'yes', 'oui' and 'ja'.


7.
Who had an explosive idea and first patented DYNAMITE?

A. J. R. Gluber
B. A. Nobel
C. G. Fawks
D. W. Bickford
Answer & Explanation
Answer: Option B

Explanation:

Alfred Noble patented dynamite in 1876. Nobel left $9 million in his will to be used as awards for people whose work benefit humanity - The Nobel Peace Prize etc.


8.
Who invented the Spinning Jenny?

A. Thornton Hargreaves
B. Peter Hargreaves
C. James Hargreaves
D. Simon Hargreaves
Answer & Explanation
Answer: Option C

Explanation:


Awarded a Patent in 1770. It used 8 bobbins at once.


Download Now

Popular posts from this blog

Bangladesh Day or National Days of Bangladesh For Celebration

Like other countries Bangladesh government has declared some National Bangladesh day when the whole nation will celebrate these national days with adequate significance and honors. The name of the Bangladesh Days are given below - 1.      Antorjatik Matri Bhasa Dibosh (International Mother Language Day) -   21 February. 2.      Shadhinota Dibosh  ( Independence Day) – 26 March. 3.      Bijoy Dibosh (Victory Day) – 16 December. 4.      Bangla Nobobarsha / Pohela Boishakh (Bangles New Year) – 14 April 5.      International May Dibosh (International May Day) – 1st May. 6.      Jatiyou Shouk Dibosh (National Mourning Day) – 15 August. 7.      Jatiyo Potaka Dibosh (National Flag Day) – 23 March. 8.      BudhhiJibi Dibosh (National Intelligent Profession Day) – 14 December. 9.      National B...

THINGS TO REMEMBER BEFOR READY TO BCS EXAM

Easy ways for BCS Exam preparation BOOKS: # If you are a new candidate of 30th BCS exam, then you should also collect the written exam books of 29th BCS ( which are available in market) and viva books. Many topics are in well written in written exam books. # Never buy too many books. Try adhere with your previous books which was well studied by you. Edit the books yourself according to the current news. # As there are many books are available, try to collect the books which are suggested by the successful candidates. If you have hesitation, then collect the book which seems well organized and eye soothing for you. BANGLA: # Bangla literature is very important for preliminary, written and also for viva exam. So you should study the Bangla literature thoroughly. # There are some renowned persons of Bangla literature that have mentioned in the written exam syllabus. You should first cl...

Some Exclusive Common Information’s about Bangladesh

1. Governmental Name of Bangladesh: The Peoples Republic of Bangladesh 2. Capital: Dhaka. 3. Government Procedure: Parliamentary. 4. Language: Bengali is the first Language and English is the second Language of Bangladesh. 5. Boarder Area of Bangladesh: East Bengal & Meghalaya is located at north of India, Assam, Tripura & Barman is located at east, East Bengal of India is located at west and the Bay of Bengal is located at South of Bangladesh. 6. Total Area of Bangladesh: It’s all about 5138 Kilo Meters. The 4427 Kilo Meters is land and the rest 711 Kilo Meters is water. The boarder area of Bangladesh is connected with two countries named India & Myanmar. 7. Total Volume of Bangladesh: 1, 47,570 Square Kilo Meters (56,977 Square Miles). 8. Divisions: There is no. of 7 divisions in Bangladesh. These are – Dhaka, Chittagong, Rajshahi, Khulna, Barisal, Sylhet and Rangpur(New). 9. Some Magic Numbers: Districts of Bangladesh – 64, ...