#### Structure Our Teeth

The teeth are the hardest substances in the human body. Besides being essential for chewing, the teeth play an important role in speech. The food is cut by the teeth inside the mouth. Teeth mechanically break the food into small pieces. These teeth vary in appearance. Each tooth is rooted in a separate socket in […]

#### CBSE Class 9th and 10th New Syllabus

According to CBSE Class 9th and 10th New Syllabus the updated curriculum, the chapters deleted. Central Board of Secondary Education (CBSE) slashed the syllabus for Classes 9 to 12 by, at least, 30% due to the corona virus pandemic. According to (HRD) Ministry officials, the syllabus has been to reduce the burden on students but […]

#### Parts of Speech

What are Parts of Speech?Definition- When words are divided into different kinds or classes, according to their use in a sentence, they are called parts of speech. According to modern English grammar there are 9 parts of speech:Noun [...]

#### Trigonometry formulas for cbse 10th class

Trigonometry formulas Trigonometry is the science of relationships between the sides and angles of a right-angled triangle. Ratios of sides of right triangle are called trigonometric ratios. Consider triangle ABC right-angled at B. These ratios are always defined with respect to acute angle ‘A’ or angle ‘C. case I case II (i) sine A = […]

#### Periodic Classification Of Elements

Periodic Classification Of Elements: The study of the Periodic Classification of elements is basic aspects of chemistry. It is essentially to classify all the elements in groups. It helps us to approach a systematic study of various elements found in nature. With the help of the Periodic Classification of Elements, a comparative study of the elements […]

#### Factorization Formula

Factorization Formula Factorization, sometimes also known as factoring consists of writing a number or another mathematical object as a product of several factors. Usually, factors are smaller or simpler objects of the same kind. Algebraic Identities: An algebraic identity is an algebraic equation that is true for all values of the variable occurring in it. […]

#### Exponents and Powers

Exponents and Powers Laws of Exponents If a, b are non-zero integers and m, n are any integers, then Powers With Negative Exponents If a is any non-zero integer and m is a positive integer, then a-m =1/am Note: a-m is called the multiplicative inverse of am as a-m × am = 1. It is obvious that am […]

#### Sample Paper Class X Maths

Sample Question Paper Mathematics-Basic Class X – Session 2019-20 Section – A Q1. If an event that cannot occur, then its probability is: [1] Solution: An event that cannot occur has 0 probability, such an event is called impossible event. Q2. Which of the following is not a zero of the polynomial p(x) = […]