Is Matter Aroun...

Which one is NOT an element?

A hard substance when bent produces a tinkling sound. Predict its nature.

A shining thick liquid is often used in glass thermometers. Name it.

When two substances A and B are powdered together in a pestle and mortar, a large amount of heat is evolved. As a result a new substance C is formed. What is the nature of the new substance?

a) compound

b) mixture

c) element 

What is the density of ice at its melting point?

Match the following with correct response.
(1) Substance retain their property
(2) Elements are combined in fixed proportion by mass
(3) Simple substance that cannot be broken down
(4) Smallest unit of compound

(A) Compound
(B) Atom
(C) Element
(D) Mixture

Which of following is correct about solubility-
A It increases with increase in temperature
B Mass of solute dissolution in 100 units of solvent
C Solubility of common salt in water in 46g at 20^∘c
D It decreases with decrease in temperature

Clouds and fogs are example of

Brass is a homogeneous mixture of