MCQ Elements SET 1ALL MCQ For Elements 1. Which of the following is the most active chemically?ChlorineLithiumFlourineIodineQuestion 1 of 152. Which among the following is a Noble Gas?HydrogenHeliumOxygenNitrogenQuestion 2 of 153. Which among the following is the correct decreasing of bio elements in Human Body?oxygen, carbon, nitrogen, hydrogen, calcium, and phosphorusoxygen, carbon, hydrogen, nitrogen, calcium, and phosphoruscarbon, oxygen, hydrogen, nitrogen, calcium, and phosphorusoxygen, hydrogen, Carbon, nitrogen, calcium, and phosphorusQuestion 3 of 154. How many electrons can the s-orbital accommodate?11682Question 4 of 155. Which of the following alkali metal ions has the highest hydration enthalpy?LithiumCaesiumPotassiumSodiumQuestion 5 of 156. While going up in a Group of Periodic Table, the metallic qualityincreases decreases first increases then decreasesremains the sameQuestion 6 of 157. Which of the following elements has zero valency?Xenon Helium BerylliumMore than one of the above.Question 7 of 158. In which group of the modern periodic table are halogens placed?16th 1st 17th18thQuestion 8 of 159. What number of elements are provided in the modern periodic table?108 94 118100Question 9 of 1510. Elements of IInd period are known as _________.Typical element Normal elementTransitional element Bridge elementQuestion 10 of 1511. The most electropositive halogen isF Br ICIQuestion 11 of 1512. Modern periodic law was given by-Dalton Dobereiner MosleyMendeleevQuestion 12 of 1513. What is the position of the metalloids in the modern periodic table?left of the table middle of the table bottom of the tableright of the tableQuestion 13 of 1514. How many elements are present in the sixth period of the modern periodic table?18 32 3622Question 14 of 1515. What is the chemical formula of Salt?ZnC NaOH NaClMore than one of the above.Question 15 of 15 Loading...
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