Related Questions

Basic open hearth furnace (BOF) is not used for producing __________ steel.
A Killed
B Rimming
C High alloy
D None of these
An SCR is made of silicon and not germanium because silicon
A Is inexpensive
B Is mechanically strong
C Has small leakage current
D Is tetravalent
Silicon percentage in silicon steel used for electrical equipments is about
A 1
B 4.0
C 8
D 14
Silicon percentage in the silicon steel used for electrical appliances/equipments is
A 0.3-0.4
B 12-14
C 3-4
D 20-25
For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
A Linearly
B Exponentially
C Logarithmically
D Inversely
The concentration of A in a first order reaction, A → B, decreases
A Linearly with time
B Exponentially with time
C Very abruptly towards the end of the reaction
D Logarithmically with time
A second order reaction of the form A + B → C is called a pseudo-first order reaction, when
A CA0 = CB0
B CA0 > CB0
C CB0 > CA0
D CB0 ≥ CB0
If the side of a square decreases by 30%, then the area of the square decreases by :
A 14%
B 21%
C 49%
D 51%
Assume that the price of product Y decreases by 5% and the quantity supplied decreases by 2%. The coefficient of price elasticity of supply for product Y is:
A Negative and therefore Y is an inferior product.
B Less than one and therefore supply is-inelastic
C More than-one and therefore supply is elastic,
D Negative & supply curve is download slopping.
কোন এক পার্কের একটি দোলনায় ঝুলতে লোহার তার ব্যবহার করা হয়েছে। কয়েকজন ছেলে-মেয়ে দোলনায় যখন দোল খাচ্ছিল তখন এক বাচ্চার অভিভাবক লক্ষ্য করেন যে, ফুলন তার 1 m থেকে বৃদ্ধি পেয়ে 1.01 m হয়েছে এবং তারটির ব্যাস হ্রাস পেয়েছে। পয়সনের অনুপাত 0.2 হলে দোলনার তারের ব্যাস কতখানি হ্রাস পায় ? (The iron wires have been used in a park to swing. When some children are swinging, the length of the wire increases from I m to 1.01 m whereas the diameter of the wire decreases which is noticed by a guardian. If Poisson's ratio is 0.2, then how much the diameter of the wire decreases?) 
A 0.15%
B 0.18%
C 2.5%
D 0.25%
E 0.2%

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