Class 10 Science Life processes Important question and answers

1.What is the role of glomerulus in kidney?

Ans.Glomerulus is a group of capillaries present in the cup like Bowman’s Capsule. It receives blood from renal artery which brings excre tory wastes from body to the kidney. It filters water, salts, glucose, urea, the nitrogen containing end products of proteins and yellow bile compounds from the liver.

NCERT Solutions CBSE Class 10 Life processes Solutions

Here are the NCERT Solutions of Chapter 6 Life Processes

Page No. 95

Q1.Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans? 

Ans.As in multicellular organisms, all the cells are not in direct contact with environment,
simple diffusion does not meet the requirement of all the body cells.   

Q2.What criteria do we use to decide whether something is alive?

Ans.All  the  living  organism  must  have  movement  at  molecular  levels  along  with
respiration  and  other  life  process  like  nutrition, respiration,  transportation  and
excretion to be called alive.

CBSE Class 8 Cell Structure and Functions Important question and Answers

One Word Answers

1.The lowest level of organization of life is

Ans.Cellular level

CBSE Class 8 Science Synthetic Fibres and Plastics Important Question and Answers

 CBSE Class 8 Science Synthetic Fibres and Plastics Important Question and Answers

A.One word Answers

1.Polyester is a long chain polymer of a chemical substance called
Ans.Ester
2.A regenerated synthetic fibre is

Ans.Rayon

CBSE Class 8 Microorganisms Friend And Foe Important question and Answers

CBSE Class 8 Microorganisms Friend And Foe Important question and Answers

A.One Word Answers

1.Some microbes have a hard outer cover called :

Ans.Cyst

CBSE Class 8 Science Crop Production and Management

CBSE Class 08 Science Crop Production and Management Important question and Answers



A. One Word Answers

 1.Conversion of ammonia into nitrates is called

Ans.Nitrification

Class 6 Electricity and Circuits Question and Answers

A.One Word Answers
1.Combination of two or more cells in series is called

Ans.Battery

Class 6 Components of Food Important Question and Answers

 Class 6 Components of Food Important Question and Answers

One Word Answers
1.Night blindness of is caused by the deficiency of
Ans.Vitamin A
2.Weak bones and tooth decay is caused by the deficiency of
Ans.Calcium
3.Iodine Solution is used to test

Class 6 Science Food: Where Does It Come From Important Question Answers

CBSE Class 6 Science Food Where does it come from.. A.One Word Answers

Q1.Green plants prepare their own food, hence they are called as
Ans.Autotrophs
Q2.Pulses are rich source of

Class 8 Metals and Non Metals Short Answer Questions

Class 8 Metals and Non Metals Short Answer Questions 1. Name two soft metals which can be cut with a knife.
2. Which non-metal is essential for our life and all living beings inhale it during breathing?
3. Name two major non-metals which are present in fertilisers and enhance the growth of plants.
4. Which non-metal is used to disinfect water?
5. Why are bells made of metals?
6. Which liquid metal is used for making thermometers?
7.Some of the following statements are incorrect. Find the incorrect statements and correct them.
(a) The property of metals by virtue of which they can be drawn into wires is called ductility.
(b) Metals are good conductor of electricity but poor conductor of heat.
(c) Articles made of metals produce ringing sound when struck hard.
(d) Oxides of non-metals and metals are acidic in nature.
(e) A less reactive metal replaces a more reactive metal from its salt solution in water
8.Name the following
a)Non metal which is a good conductor of electricity
b)Non metal which is lustrous
C)Metal with highest melting point
d)Most reactive Metal
e)Which gas is released when metal reacts with acid
9.Name the non metal which is added to common salt
10.State whether the following statements are true or false :-
a. Metals form neutral oxides when react with oxyge n.
b. Solution of MgO in water turns red litmus paper to blue.
c. Rust is an oxide of iron.
d. Zinc reacts with water but copper reacts only wi th steam.
e. Zinc replaces copper from the copper sulphate so lution.
11.Fill in the blanks :-
a. Non metals are generally ______, so they break i nto pieces on hammering.
b. Sodium and ______ are soft enough to be cut with a knife.
c. Strings of musical instruments are made up of a ______ .
d. ______ is the only non metal which is a good con ductor of heat and electricity.
e. Metals oxides are ______ in nature because their solution in water turns red litmus blue.
12.Fill in the blanks :-
a. A pencil lead is made up of a non metal called _ _____ .
b. Non metal do not make a ______ sound when struck .
c. Non metals are ______ conductors of electricity.
d. Non metals are not good conductors of heat hence also called as ______ .
e. Bromine is the only non metal which is ______ at room temperature.

Class 8 Synthetic Fibres and Plastics Short Answer Questions

 Class 8 Synthetic Fibres and Plastics Short Answer Questions

1.Name the natural polymer and its units
2.What is the common name of artificial silk
3.Which fibre has stronger tensile strength than steel

Class 8 Microorganisms Friend And Foe Short Answer Questions

Class 8 Microorganisms Friend And Foe Short Answer Questions 

1.Unscramble the jumbled words underlined in the following statements.
(a) Cells of our body produce santiidobe to fight pathogens.

(b) curbossulite is an air-borne disease caused by a bacterium.

Acids Bases and Salts Important Question and Answers

Q1.Why alkalis like sodium hydroxide and potassium hyd roxide should not be left exposed to air?

Ans.Alkalis should not be left exposed to air be cause they are hygroscopic in nature and absorb moisture from atmosphere in which they g et dissolved.

Q2.Dry ammonia has no action on litmus paper but a sol ution of ammonia in water turns red litmus paper blue. Why is it so?