Comparitive Idioms

Comparative Idioms

While comparing two things, we use expressions like 'as ... as', these expressions are called comparative idioms. Generally used to reflect personality type of a thing or a person.

1.  As bitter as gall
2.  As black as coal
3.  As blind as a bat
4.  As bold  as a lion

CBSE Class 9 - Science - SA1 Paper

Class 9 - Science - SA1 - Paper

NTSE / NSO MAT Quiz-11 (SPOT The Odd One)

MAT
QUIZ

In this test the candidate has to figure out the odd or dissimilar option from the asked four choices.

Which one of the following words is different from the rest?
Q1:
(a) Dog  
(b) Horse
(c) Cow
(d) Tiger

Q2:
(a) Cotton
(b) Nylon
(c) Silk
(d) Wool

CBSE Class 11 - Physics - Units and Measurements - MCQs

Multiple Choice Questions

Q1: Light year is a unit of
(a) time
(b) distance
(c) sunlight intensity
(d) mass

CBSE Class 7 Science - CH5 - Acids, Bases and Salts

NCERT Chapter Solutions & other Q & A

pH value is used
to indicate acidic, basic or
neutral nature of a
substance.
credits: wikicommons

Q1: State differences between acids and bases.

Answer:

SNo.	Properties	Acids	Bases
1.	Taste	Sour Taste	Bitter Taste
2.	Litmus Test	Turn blue litmus into red.	Turn red litmus into blue
3.	Dissolved in water	Give H+ ions (responsible for its acidic nature)	Give OH- ions (responsible for its basic nature)
4.	Action with metals	Give Hydrogen Gas	Generally do not react.
5.	Action with Ammonium Salt	Do not react	Give ammonia gas
6.	Action with phenolphthalein	Do not give any colour.	Give pink colour
7.	Action with methyl orange	Give red colour.	Give yellow colour.
8.	Absorb Carbon dioxide	Do not absorb CO2 gas.	Some bases like NaOH absorb CO2 gas.
9.	Naturally Found	Vinegar, Curd, Citrus fruits, HCl etc.	Lime Water, Soap, Milk of Magnesia etc.

CBSE Class 9 Maths Polynomials Exercise 2.5

Algebraic Identities

1.  (x + y)² = x² + 2xy + y²

2.  (x – y)²  = x² – 2xy + y² 

3.  x²  – y²  = (x + y) (x – y)

4.  (x + a) (x + b) =  x² + (a+b)x + ab

5.  (x - a)(x + b) = x² + (b-a)x - ab

CBSE Class 6 Science - CH6 - Changes Around Us

Changes Around Us

Trees buried under Earth for
million years changed into coal

NCERT Chapter Solutions and other Q & A

Q1: To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?

Answer: Yes, by unfolding the dress we can reverse this change.

Q2: What are the various types of changes?

Answer: Changes can be categorised as:

1. Slow and fast changes.
2. Reversible and irreversible changes.
3. Natural and man-made changes.
4. Periodic and non-periodic changes.
5. Physical and chemical changes.

CBSE Class 9 - Biology - CH6 - Tissues (Set-2) (#cbsenotes)(#eduvictors)

ANIMAL TISSUES (Short Q & A)

In case you want to read Tissues-Set-1

Q1: Based on functions performed, list the types of animal tissues.

Answer: Four Category types:

1. Epithelial tissue
2. Connective tissue
3. Nervous tissue
4. Muscle tissue

CBSE Class 9 (Maths) - Polynomials - Exercise 2.4

Factor Theorem

1. Let p(x) be a polynomial and a be any real number. If p(a) = 0, then (x–a) is a factor of p(x).

2. If (x–a) is a factor of p(x), then p(a) = 0

EXERCISE 2.4 (NCERT Solution)

Q1: Determine which of the following polynomials has (x + 1) a factor :

(i) x³ + x² + x + 1

(ii) x⁴ + x³ + x² + x + 1

(iii) x⁴ + 3x³ + 3x² + x + 1

(iv) x³ – x² – (2 + √2)x + √2

Answer: If (x+1) is a factor of a polynomial p(x), then p(-1) must be equal to zero.

Plural Nouns With No Singular Form

Nouns never used in Singular form

1. Articles of Dress e.g. Trousers, pants, pyjamas, shorts, clothes, jeans etc.

2. Instruments consisting of two identical parts or forming a pair
    e.g. scissors, spectacles, glasses, pliers etc.