Podcast
Questions and Answers
How many elements have scientists identified at present?
How many elements have scientists identified at present?
- 96
- 118 (correct)
- 85
- 100
Which element is a constituent of proteins and nucleic acids?
Which element is a constituent of proteins and nucleic acids?
- Phosphorus (P)
- Oxygen (O)
- Carbon (C)
- Nitrogen (N) (correct)
Which element is essential for blood clotting and is a component of bones and teeth?
Which element is essential for blood clotting and is a component of bones and teeth?
- Sodium (Na)
- Sulfur (S)
- Potassium (K)
- Calcium (Ca) (correct)
Which element is essential for ATP and phospholipids?
Which element is essential for ATP and phospholipids?
Which element is essential for thyroxin in the thyroid?
Which element is essential for thyroxin in the thyroid?
Which metal is an oxygen carrier in myoglobin and hemoglobin?
Which metal is an oxygen carrier in myoglobin and hemoglobin?
Which metal is essential for Vitamin B12 promoting red cell development?
Which metal is essential for Vitamin B12 promoting red cell development?
Which metal is a constituent of teeth and bones?
Which metal is a constituent of teeth and bones?
What is the role of selenium in living organisms?
What is the role of selenium in living organisms?
How many unpaired electrons does Gd3+ ion have?
How many unpaired electrons does Gd3+ ion have?
What is the maximum number of electrons that can be accommodated in the 3d subshell?
What is the maximum number of electrons that can be accommodated in the 3d subshell?
Which shell has the quantum number 'n' equal to 4?
Which shell has the quantum number 'n' equal to 4?
What is the role of manganese in living organisms?
What is the role of manganese in living organisms?
Which subshell has 7 orbitals?
Which subshell has 7 orbitals?
What is the shorthand notation for the electron configuration 1s2 2s2 2p6 3s2 3p6?
What is the shorthand notation for the electron configuration 1s2 2s2 2p6 3s2 3p6?
Which element is drawn with 4 valence electrons in the Lewis Dot structure?
Which element is drawn with 4 valence electrons in the Lewis Dot structure?
