Alum increases the rate of sedimentation because alum being an external agent causes the particles present in solution to become more heavy due to alum's chemical reacts with them and made them more heavier than before. As heavier particles sink in water these particles settle down therefore, increasing the speed ... Read More

The forces between liquid particles are weaker than the forces between solid particles. This means that liquid particles are further apart and can move about more easily. Since the particles can move, the liquid can flow and take the shape of its container.

The intermolecular space between the solids is least because they are held by a strong intermolecular force of attraction. This strong intermolecular force of attraction gives rigidity to the solids. It reduces the space between the molecules in a solid.

Given:$4x^{2}-3x+7$To do:  Find real roots of the equationSolution:Comparing this to standard quadratic equation $ax^{2} + bx + c = 0$ a = 4; b = -3 and c = 7 Discriminant (D) = $b^{2} - 4ac = (-3)^{2} - 4 \times 4 \times 7$= 9 - 112 = -103 < 0 So given quadratic has NO REAL ROOTS

Given: 6 + 8000To find: We have to find the sum of 8000 and 6.Solution:  6 + 8000 = 8006

 Highest common factor (HCF) :The highest common factor (HCF) of two whole numbers is the largest whole number which is a factor of both Example: Find the HCF of 18 and 27 The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, ... Read More

Given :The given term is  $33-22$.To do :We have to find the value of $33-22$Solution :$33 - 22 = 11$The value of $33-22$ is 11.

Associative Property: Multiplication of integers is associative. That is, for any three integers, a, b, c,a × (b × c) = (a × b) × cIt means no matter how we group different integers in multiplication, the product remains unaffected. Example: For three integers, 2, 3, and 5, their multiplication, 2 × (3 × 5) = (2 × 3) × 5 = 30 For three integers, 2, –6, and –5, their multiplication, 2 × ((–6) × (–5)) = (2 × (–6)) × (–5) = 60

Non-metals are the elements which form negative ions by accepting or gaining electrons. • Non-metals usually have 4, 5, 6 or 7 electrons in their outermost shell.• Non-metals are those which lack all the metallic attributes. • They are good insulators of heat and electricity. • They are mostly gases and sometimes liquid. ... Read More

Square Root: The square root of a number is that number which when multiplied to itself gives the given number. Thus, if p is the square root of q, then $p \times p = q$     or    $p^2 = q$ The square root of q is denoted ... Read More