An element which can exhibit valencies of 2, 4, and 6 can be :(a) copper (b) iron (c) mercury (d) sulphur
Correct Answer: (d) sulphur
Explanation: Sulphur can exhibit valencies of 2, 4, and 6.
Related Articles
- Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The elements X and Y are most likely to be respectively :(a) copper and sulphur (b) sulphur and iron(c) phosphorus and nitrogen (d) nitrogen and iron
- A metal in which even iron can float is:(a) sodium(b) magnesium(c) mercury(d) manganese
- The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of :(a) 1 (b) 2 (c) 3 (d) 4
- An element B shows valencies of 4 and 6. Write the formulae of its two oxides.
- Give one use each of the following metals:(a) Iron(b) Copper(c) Aluminium(d) Zinc(e) Mercury
- Which of the following can be beaten into thin sheets? Why?(a) Zinc(b) Phosphorus(c) Sulphur(d) Oxygen
- Out of the following, an example of matter which can be termed as fluid is :(a) carbon (b) sulphur (c) oxygen (d) phosphorus
- For an element, Z = 9. The valency of this element will be :(a) 4 (b) 2 (c) 1 (d) 3
- There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16 respectively. The element which can exhibit covalency as well as electrovalency will be :(a) P (b) Q (c) R (d) S
- Work out the formula for sulphur dioxide. (Valencies : S = 4; O = 2)
- What valencies will be shown by the elements A, B, C, D and E having atomic number 2, 4, 8, 10 and 13 respectively.
- Can copper displace iron from iron sulphate solution? Give reasons.
- Pure copper sulphate can be obtained from an impure sample by the process of :(a) evaporation (b) fractional distillation(c) centrifugation (d) crystallisation
- Which of the following can be made into crystal?(a) A bacterium(b) An amoeba(c) A virus(d) A sperm
- Which among iron and mercury is a better conductor of electricity?
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies