Data transmitted on a given amount of time is called___
Anonymous Quiz
7%
Noice
60%
Bandwidth
13%
Power
20%
Frequency
Who discovered Benzene ?
Anonymous Quiz
39%
John Napier
24%
John Dalton
18%
J. J. Thomson
20%
Michael Faraday
Presence of which among the following minerals in Banana makes them slightly radioactive ?
Anonymous Quiz
16%
Na
38%
Mg
31%
K
15%
Ca
Which among the following gas usually causes explosions in coal mines ?
Anonymous Quiz
50%
CH4
29%
H2S
16%
CO
5%
NO
Which of the following carbon compound is used as liquid rocket fuel ?
Anonymous Quiz
24%
Ethanol
43%
Propane
17%
Methane
17%
CCl4
Which of the following chemicals is also known as “Chinese snow” ?
Anonymous Quiz
25%
Ammonium nitrate (NH4NO3)
29%
Potassium nitrate (KNO3)
21%
Sodium nitrate (NaNO3)
24%
Silver iodide (AgI)
S.B STUDY ACADEMY এর পক্ষ থেকে সকল সদস্যকে জানাই শুভ বিজয়ার প্রীতি শুভেচ্ছা ও আন্তরিক অভিনন্দন। সকলে সুস্থ থাকবেন।
Which of the following gas is used to prevent the chips from getting oxidised ?
Anonymous Quiz
23%
Hydrogen
27%
Helium
42%
Nitrogen
9%
Oxygen
What is the common name of acetyl salicylic acid ?
Anonymous Quiz
18%
Paracetamol
64%
Aspirin
15%
Wintergreen
3%
Trazodone
Carnotite is a mineral of which among the following metals ?
Anonymous Quiz
15%
Iron
33%
Uranium
34%
Lead
18%
Aluminum
What is the flame colour of “Strontium Salt” metal ion ?
Anonymous Quiz
32%
Crimson Red
40%
Apple Green
22%
Brick Red
7%
Bluish Green
Commercial nitric acid is coloured because it contains dissolved
Anonymous Quiz
11%
H2
54%
NO2
15%
NO
20%
Coloured impurities
Which radioactive element used in heat pacemakers ?
Anonymous Quiz
20%
Uranium
23%
Plutonium
38%
Radium
19%
Deuterium
Age of a tree is determined using radio-isotope of ____
Anonymous Quiz
9%
Phosphorus
78%
Carbon
9%
Cobalt
4%
Nitrogen