Question
Which of the following is arranged in order of
decreasing conductivity?Solution
Copper ; 9% less conductive than silver; aluminium is 10% less conductive than copper; while steel is the least conductive among the given options. The most electrically conductive metal is silver.
Magnesium has atomic number as 12. Find out its valiancy.
Which of the following is correct regarding isobars?
I. They have different atomic numbers
II. The have same mass numbers
Which base is present in soap?
Which of the following relation is correct?
Which of the following pair of element – atomicity is correct?
I. Helium – monoatomic
II. Oxygen – triatomic
Which acid is found in vinegar?
Which of the follwoing gas is commonly known as "Laughing Gas" ?
Which dating method is commonly used to determine the age of materials from prehistoric times?
The device which transfer the signal from low resistance region to high resistance region is –
Which type of wave does not require a medium for propagation?
