Question : Which element precedes carbon in the modern periodic table?
Option 1: Boron
Option 2: Lithium
Option 3: Beryllium
Option 4: Magnesium
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Correct Answer: Boron
Solution : The correct option is Boron.
The element that precedes carbon in the modern periodic table is Boron. Boron is the fifth element with an atomic number of 5, while carbon is the sixth element with an atomic number of 6. It is a metalloid, which means it has properties of both metals and non-metals. Boron is not found freely in nature but is typically found in borate minerals.
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Question : Which of the following elements does not belong to group 1 of the modern periodic table?
Option 1: Sodium
Option 2: Radium
Option 3: Potassium
Option 4: Lithium
Question : Which chemical element from group 18 of the modern periodic table, whose atomic number is 10, contains a mixture of three stable isotopes commonly used to make signal and gas lasers and as refrigerators?
Option 1: Neon
Option 2: Oganesson
Option 3: Helium
Option 4: Radon
Question : Magnesium is present in which of the following?
Option 1: Chlorophyll
Option 2: Haemoglobin
Option 3: Cytochrome
Option 4: ATP
Question : Which of the following gases is used in the manufacture of soft drinks?
Option 1: Oxygen
Option 2: Carbon dioxide
Option 3: Carbon monoxide
Question : Which element has the maximum presence in the Sun?
Option 1: Hydrogen
Option 2: Oxygen
Option 3: Argon
Option 4: Krypton
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