Match List-I with ListII and select the correct answer using the code given below the Lists : List-I (Element) A. Mg B. Ca C. Sr D. Ba List-iil (Property/ Use) 1. Gives red colour to flame 2. Sulphate compound used in medicine to examine the alimentary ca

examrobotsa's picture

Submitted by examrobotsa on

Q: 26 (CDS-II/2016)
Match List-I with List—II and select the correct answer using the code given below the Lists : List-I (Element) A. Mg B. Ca C. Sr D. Ba List-iil (Property/ Use)
1. Gives red colour to flame
2. Sulphate compound used in medicine to examine the alimentary canal of a patient
3. Traps the energy of sunlight in photosynthesis
4. Control of muscle contraction Code :

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,27,21,5,8,32,3

keywords: 

{'sulphate compound': [0, 0, 0, 1], 'photosynthesis': [20, 0, 4, 11], 'element': [0, 0, 0, 1], 'sunlight': [0, 0, 1, 0], 'red colour': [1, 0, 4, 4], 'energy': [0, 0, 1, 2], 'muscle': [4, 0, 0, 1], 'medicine': [0, 0, 0, 1], 'mg': [1, 0, 4, 6]}

The correct answer is option 3: A-D, B-C, C-A, D-B. Let`s analyze each pair:

Pair A-D: Magnesium (Mg) is matched with Barium (Ba). Both elements are alkaline earth metals and belong to the same group in the periodic table. So, this pairing is correct.

Pair B-C: Calcium (Ca) is matched with Strontium (Sr). Both elements are also alkaline earth metals and belong to the same group in the periodic table. Therefore, this pairing is correct.

Pair C-A: Strontium (Sr) is matched with Magnesium (Mg). This pairing is incorrect because Strontium should be matched with Calcium.

Pair D-B: Barium (Ba) is matched with Calcium (Ca). This pairing is also incorrect because Barium should be matched with Strontium.

Therefore, option 3 is the correct match, where A is matched with D, B is matched with C, C is matched with A and D is matched with B.

Alert - Correct answer should be option 2: A-D, B-C, C-B, D-A.

Practice this on app