Tuesday, August 22, 2017

CBSE Class 12 - Biology - Human Nutrition (Worksheet) (#cbseNotes)

Human Nutrition (Worksheet)

CBSE Class 12 - Biology - Human Nutrition (Worksheet) (#cbseNotes)
Digestive System
By Mariana Ruiz Villarreal(LadyofHats) (Own work)
[Public domain], via Wikimedia Commons

Fill in the blanks


1. ______________ is a hormone released by the mucosa of duodenum.


2. The process by which the complex food materials are changed to simple molecules is called _______.


3. Trypsinogen in the presence of __________ enzyme breaks into Trypsin + Inactive dipeptides.


4. Bile salts with the help of _________ emulsify fats.


Learn English Vocabulary From News Papers - August 22 2017 (Day 12)

Learn English Vocabulary From News Papers - August 22 2017 (Day 12)

Learn English Vocabulary From News Papers - August 22 2017 (Day 12)


To Purge

EPS and OPS are one again, move to purge Sasikala loyalists, all eyes on Dinakaran


meaning: to get rid of people from an organization (निकाल देना)

Examples:
1. Purge the data of those whose subscriptions have expired.
2. She is so superstitious that she hired an astrologer to purge evil spirits from her house.

Monday, August 21, 2017

CBSE Class 10 - Science - Unit Test 2 Question Paper (2017-18) (#cbsePapers)

CBSE Class 10 - Science  - Unit Test 2 Question Paper (2017-18)  (#cbsePapers)

CBSE Class 10 - Science  - Unit Test 2 Question Paper (2017-18) 

Chapters covered are:

1. Biology - Control and Coordination
2. Chemistry - Acids, Bases and Salts
3. Physics - Magnetic Effects of Current


CBSE Class 10 - Science - MANAGEMENT OF NATURAL RESOURCES - Important Points That You Must Know (#cbseNotes)

MANAGEMENT OF NATURAL RESOURCES - Important Points That You Must Know

CBSE Class 10 - Science - MANAGEMENT OF NATURAL RESOURCES - Important Points That You Must Know (#cbseNotes)


1. We can manage and conserve our natural resources as well as the environment through sustainable development.


2. Sustainable development means development which meets the needs of the present generation as well as of the future generation.


3. The objective of sustainable development is to maintain a healthy environment which is pollution free, so that human beings can live in harmony with nature.


4. To achieve sustainable development, the goal should be to minimise resource use.


Sunday, August 20, 2017

Class 11 - Biology - Plant Tissues - Epidermal Tissue System in Plants - Important Points (#cbseNotes)

Epidermal Tissue System in Plants

Class 11 - Biology - Plant Tissues - Epidermal Tissue System in Plants - Important Points (#cbseNotes)
Leaf Structure and Epidermis
(image credits: wikimedia)

1. The outer covering of the plant body is formed of epidermal tissue system.


2. The epidermal tissue system is composed of
epidermal cells,
stomata and
edidermal appendages (trichomes and hairs).


3. Epidermis: The outermost layer of the primary plant body is called epidermis.


4. The epidermis is made up of elongated, compactly arranged cells. These cells form a continuous layer. There is usually a single layer of cells in the epidermis.


5. The epidermal cells are parenchymatous. In these cells, a small amount of cytoplasm lines the cell wall and a large vacuole is present.

Parenting Tip - Attitude (#parenting)

Parenting Tip - Attitude







CBSE Class 12 - Chemistry - Solutions -Very Short Questions and Answers (#cbseNotes)

Solutions -Very Short Questions and Answers

CBSE Class 12 - Chemistry - Solutions -Very Short Questions and Answers (#cbseNotes)


Q1: What is Van’t Hoff factor ?

Answer: It is the ratio of normal molecular mass to observed molecular mass. It is denoted
as i.
i = normal molecular mass/observed molecular mass
 = no. of particles after association or dissociation/no. of particles before


Q2: What is the Van’t Hoff factor in K₄[Fe(CN)₆] and BaCl₂ ?

Answer: 5 and 3


Q3: Why the molecular mass becomes abnormal ?

Answer: It is due to association or dissociation of solute in given solvent.


Q4: Define molarity. How it is related with normality ?

Answer: N = M ✕ Basicity or acidity