Hand picked material and question banks

Latest Popular RatedShowing Page 2 of 34Total Questions 266 Join Examsbook

Q:
Burning of coal is a ______ reaction.
215 0

Answer : 3. "combination"
Explanation :
1. The burning of coal is an example of a combination reaction (a combination).
2. When two or more elements combine to form a compound, it is called a combination reaction.

Q:
What do you call the type of drugs that mimic the natural messenger by switching on the receptor?
436 0

Answer : 3. "Agonist"

Q:
In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically be written as 4n+2 (n = 0,1,2,3 etc.)?
305 0

Answer : 2. "Erich Huckel"

Q:
Which of the following is an organic compound with the formula C₆H₄Cl₂ that is used as a fumigant insecticide to control cloth months?
364 0

Answer : 1. "Paradichlorobenzene"

Q:
Starch in potatoes reacts with _____, turning to a blue colour.
424 1

Answer : 3. "Iodine "

Q:
Of the options listed below, the speed of sound is highest in _____ at 25°C.
307 0

Answer : 2. "Aluminium "

Q:
Which of the following is known as artificial silk?
305 0

Answer : 4. "Rayon"

Q:
Which of the following is considered to be the fifth state of matter?
270 0

Q: Burning of coal is a ______ reaction. 215 06491958013e8bde0322b983e

Answer : 3. "combination" Explanation :1. The burning of coal is an example of a combination reaction (a combination).2. When two or more elements combine to form a compound, it is called a combination reaction.

Q: What do you call the type of drugs that mimic the natural messenger by switching on the receptor? 436 064c390a7d3a6d4481ef1e4a3

Answer : 3. "Agonist"

Q: In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically be written as 4n+2 (n = 0,1,2,3 etc.)? 305 0647de965e72c4684a1dcb8b3

Answer : 2. "Erich Huckel"

Q: Which of the following is an organic compound with the formula C6H4Cl2 that is used as a fumigant insecticide to control cloth months? 364 06441214c72ca731a9945cdd8

Answer : 1. "Paradichlorobenzene"

Q: Starch in potatoes reacts with _____, turning to a blue colour. 424 16439228372ca731a99323e96

Answer : 3. "Iodine "

Q: Of the options listed below, the speed of sound is highest in _____ at 25°C. 307 064391e3719f0af16e3835d86

Answer : 2. "Aluminium "

Q: Which of the following is known as artificial silk? 305 0642c1b64ed76c064b866560c

Answer : 4. "Rayon"

Q: Which of the following is considered to be the fifth state of matter? 270 064242bd8dcb650c14569c06c

Answer : 1. "Bose-Einstein condensate "

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Q:
Burning of coal is a ______ reaction.
215 0

Answer : 3. "combination"
Explanation :
1. The burning of coal is an example of a combination reaction (a combination).
2. When two or more elements combine to form a compound, it is called a combination reaction.

Q:
What do you call the type of drugs that mimic the natural messenger by switching on the receptor?
436 0

Q:
In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically be written as 4n+2 (n = 0,1,2,3 etc.)?
305 0

Q:
Which of the following is an organic compound with the formula C₆H₄Cl₂ that is used as a fumigant insecticide to control cloth months?
364 0

Q:
Starch in potatoes reacts with _____, turning to a blue colour.
424 1

Q:
Of the options listed below, the speed of sound is highest in _____ at 25°C.
307 0

Q:
Which of the following is known as artificial silk?
305 0

Q:
Which of the following is considered to be the fifth state of matter?
270 0