Class 7 - Science - Ch2 - Nutrition in Animals

NCERT Text book Solutions and other Questions and Answers

Q1: Fill in the blanks:
Answer: 
(a) The main steps of digestion in humans are ingestion, digestion, absorption , assimilation and egestion.

(b) The largest gland in the human body is liver.

(c) The stomach releases hydrochloric acid and digestive juices which act on food.

(d) The inner wall of the small intestine has many finger-like outgrowths called villi.

(e) Amoeba digests its food in the food vacuole .

Q2: Mark ‘T’ if the statement is true and ‘F’ if it is false:
Answer:
(a) Digestion of starch starts in the stomach. (T/F) : False. It starts in the mouth
(b) The tongue helps in mixing food with saliva. (T/F) : True
(c) The gall bladder temporarily stores bile. (T/F) : True
(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F) : True

Q3: Tick (√) mark the correct answer in each of the following:
Answer:

(a) Fat is completely digested in the(i) stomach
(ii) mouth
(iii) small intestine  (√)
(iv) large intestine

(b) Water from the undigested food is absorbed mainly in the
(i) stomach
(ii) foodpipe
(iii) small intestine
(iv) large intestine (√)

Q4: Match the items of Column I with those given in Column II:
Answer:
Carbohydrates - Sugar
Proteins           - Amino acids
Fats                 - Fatty acids and glycerol

Class 6 - Science - Ch7 - Getting to Know Plants

NCERT Chapter Solutions and other Questions and Answers

Growing Plants
(source:openclipart)

Q1: Correct the following statements and rewrite them in your notebook.
(a) Stem absorbs water and minerals from the soil.
(b) Leaves hold the plant upright.
(c) Roots conduct water to the leaves.
(d) The number of petals and sepals in a flower is always equal.
(e) If the sepals of a flower are joined together, its petals are also joined together.
(f) If the petals of a flower are joined together, then the pistil is joined to the petal. 

Answer:

(a) Root absorbs water and minerals from the soil.

(b) Stem holds the plant upright.

(c) Stem conducts water to the leaves.

(d) The number of petals and sepals in a flower is not always equal.

(e) If the sepals of a flower are joined together, its petals are separate and are not joined together.

(f) If the petals of a flower are joined together, then the pistil is not necessary joined to the petal.

Q3: Can you find a plant in your house or in your neighborhood, which has a long but a weak stem? Write its name. In which category would you classify it?

Answer: Money plant which has long and weak stem. It is a climber.

Class 8, NTSE - Maths - Square and Square Roots #class8Maths #eduvictors

Class 8, NTSE - Maths - Square and Square Roots 

Perfect Square

1. A number is called a perfect square if it is expressed as the square of a number.

2. E.g. 1, 4, 9, 16, 25, ... are called perfect squares (1x1 = 1, 2x2 = 4, 3 x 3 = 9...)

3. In square numbers, the digits at the unit’s place are always 0, 1, 4, 5, 6 or 9.

4. The numbers having 2, 3, 7 or 8 at their units' place are not perfect square numbers. 

Q1: Which one of the following numbers is a perfect square:

a) 622

b) 393

c) 5778

d) 625

Answer: d.

5. If a number ends with the odd number of zeros then it is not a perfect square.

Q2: Check which of the following is not a perfect square.

a) 81000

b) 8100

c) 900

d) 6250000

Answer: a) 81000 (= 9² x 10² x 10)

6. The square of an even number is an even number while the square of an odd number is an odd number.

7. If n is a positive whole number then (n+1)² - n² = 2n + 1 
or 2n numbers in between the squares of the numbers n and (n + 1)

English Grammar - Editing Exercise-1 (#eduvictors)(#cbsenotes)

Editing Exercise

Exercise 1:

England has been long famous for her dramatist,	a)……………
the greatest of who was William Shakespeare.	b)……………
It is hard to find the educated man in	c)………………
the English speaking world whom has not heard	d)………………
for his name. The actor and playwright	e)……………
born more than 400 years ago had	f)………………
become not only for Englishman but for	g)……………
the whole world chief symbol for	h)………………
British culture. He is a dramatist and a poet.	.

Answers:

a) dramatist- dramatists

b) who - whom

c) the - an

d) whom - who

e) for - of

f) had - has

g) Englishman - Englishmen

h) for - of

Class 10 - English Comm. Workbook - Unit 1 - Determiners

A. There are twenty determiners in the grid given below. Encircle these determiners.

B.1.   
1. The building that I visited today is a museum.
2. A building in which antiques are kept is called a museum.
The word used before building in ….
Sentence 1 is __the____ and in
Sentence 2 is ___a____

B2: Complete the following sentences using appropriate articles.

a. ...is _the__ capital...

b. Australia, __a_ country...

c. __A___ fruit seller does...

d. __The__ girl who lives at...

e. ...countries rely on __a__ type of cocoa...

f. ...considered to be __the_ largest river...

g. _The_ Punjab, __an__ important state...

h. 1950 is __the_ year in which...

Class 6 - Science - CH10 - Motion and Measurement of Distances

Motion and Measurement of Distances

NCERT Solution and other Questions and Answers

Q1: Give two examples each, of modes of transport used on land, water and air.
Answer:

1. On Land: Bicycle, Car, Bus
2. On Water: Ship, Boat, Ferry
3. On Air: Helicopter, Aeroplane, Glider

Q2: Fill in the blanks:
Answer:

(i) One metre is ____100_ cm.

(ii) Five kilometre is ___5000_ m. (1 Km = 1000m)

(iii) A motion of a child on a swing is ___periodic motion__.

(iv) A motion of the needle of a sewing machine is __periodic motion_.

(v) A motion of a wheel of a bicycle is__circular motion_.


Q3: Why can a pace or a footstep not be used as a standard unit of length?

Answer: A pace or a footstep not be used as a standard unit of length because the size of pace and footstep vary from person to person. This will lead to confusion while measuring the lengths by different persons. We should use standard units like International System of Units (SI Units).

Q4: Arrange the following lengths in their increasing magnitude:
       1 metre, 1 centimetre, 1 kilometre,1 millimetre

Rules of Divisibility

Rules of Divisibility

 
2: A number is divisible by 2 if the last digit (unit's digit) is even. e.g. 32, 459992

3: A number is divisible by 3, if the sum of digits of a number is divisible by 3.
    e.g. 252 = 2 + 5 + 2 = 9 ÷ 3 = 3 ∴ 252 is divisible by 3

4: A number is divisible by 4, if the last two digits of the number is divisible by 4.
    e.g. 81924 = since last two digits 24 is divisible by 4, hence the number.

5: A number is divisible by 5, if the last digit of the number is 0 or 5.
    e.g. 35, 200, 1005

6: A number is divisible by 6, if the number is divisible by both 2 and 3.

7: A number is divisible by 7, to check for this follow these steps:

Class 10 - Science - Ch1 - Chemical Reactions & Equations

Ch1 - Chemical Reactions & Equations

MCQs, Q & A, NCERT Solutions

Q1:  A chemical reaction involves in
a. Only breaking of bonds
b. Only formation of bonds
c. Both breaking and formation of bonds
d. None of these

Answer: (c)  Both breaking and formation of bonds

Q2: A balanced chemical equation always obeys
a. Law of conservation of mass
b. Law of thermal equilibrium
c. Law of conservation of energy
d. All of the above

Answer: (a) law of conservation of mass.

class 7 - Science - Ch1 - Nutrition in Plants

Nutrition in Plants

Q1: Why do organisms need to take food?

Answer: All organisms take food and utilise it to get energy for the growth and maintenance of their bodies.

Q2: Why do plants use the nitrogen present in soil? How is this nitrogen replenished in the soil?

Answer: Plants cannot absorb nitrogen in gas form; they need it in soluble form. Therefore, they use the nitrogen present in soil to prepare proteins.

Atmospheric nitrogen is fixed in soil by nitrogen-fixing bacteria such as Rhizobium,which live in the root nodules of leguminous plants such as gram, peas, beans, etc. In return, the plants provide food and shelter to the bacteria.

Class 6 - Science - Ch1 - Food: Where Does It Come From? - Q & A

Food: Where Does It Come From? 

Q & A

Q1: Do you find that all living beings need the same kind of food?

Answer: No. Different animals eat different kinds of food as per their needs. Depending on kind of food they eat, animals are divided into three categories:

• Herbivores: Animals which feed on plants and plant products are called herbivores. e.g. cow, goat
• Carnivores: Animals which feed on other animals are called carnivores. e.g. lion, tiger
• Omnivores: Animals which feed on both plants and animals are called omnivores. e.g. crow

Q2: Name five plants and their parts that we eat.

Answer:

1. Apple - Fruit
2. Potato - Stem
3. Carrot - Root
4. Spinach - Leaf
5. Wheat - Seed
6. Cauliflower - Flower