Which one among the following metals is used in fireworks to make a brilliant white light ?

examrobotsa's picture

Submitted by examrobotsa on

Q: 53 (CDS-I/2013)
Which one among the following metals is used in fireworks to make a brilliant white light ?

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,77,37,24,77,7,6

keywords: 

{'metals': [1, 2, 2, 7], 'aluminium': [1, 0, 3, 2], 'fireworks': [0, 0, 1, 2], 'magnesium': [1, 0, 2, 3], 'brilliant white light': [0, 0, 0, 1], 'silver': [0, 0, 0, 1], 'sodium': [10, 2, 12, 23]}

Option 1: Sodium is not used in fireworks to create a brilliant white light. Sodium is commonly used in fireworks to create a yellow color.

Option 2: Magnesium is the correct answer. It is commonly used in fireworks because it produces a very bright and intense white light when ignited. This makes it ideal for creating a brilliant white flash in fireworks displays.

Option 3: Aluminium is not used to create a white light in fireworks. Instead, it is used to produce silver or silvery-white sparks.

Option 4: Silver is not commonly used in fireworks to produce a white light. Although it can produce a bright flash, it is more expensive and less commonly used compared to magnesium.

Therefore, the correct answer is option 2: Magnesium, as it is used in fireworks to create a brilliant white light.