top of page
BLOG PAGE
Search
Why does lack of oxygen in muscles often lead to cramps among cricketers?
Why does lack of oxygen in muscles often lead to cramps among cricketers? Answer - This happens due to the conversion of pyruvate to...
Vikas Yadav
May 11, 20211 min read
7 views
0 comments
Which is the first enzyme to mix with food in the digestive system?
Which is the first enzyme to mix with food in the digestive system? Answer - Salivary amylase
Vikas Yadav
May 11, 20211 min read
14 views
0 comments
Which part of root is involved in the exchange of respiratory gases in plants?
Which part of root is involved in the exchange of respiratory gases in plants? Answer - Root hairs are involved in the exchange of...
Vikas Yadav
May 11, 20211 min read
6 views
0 comments
Why do the walls of trachea not collapse when there is less air in it?
Why do the walls of trachea not collapse when there is less air in it? Answer - Tracheal walls do not collapse when there is less air in...
Vikas Yadav
May 11, 20211 min read
11 views
0 comments
What is the main function of kidneys in humans?
What is the main function of kidneys in humans? Answer - Kidneys excrete water and dissolve metabolic wastes, e.g., urea and other...
Vikas Yadav
May 11, 20211 min read
7 views
0 comments
What will happen if platelets were absent in the blood?
What will happen if platelets were absent in the blood? Answer - In the absence of platelets, the process of clotting will be affected.
Vikas Yadav
May 11, 20211 min read
12 views
0 comments
What will happen to a plant if its xylem is removed? [CBSE Delhi 2009]
What will happen to a plant if its xylem is removed? [CBSE Delhi 2009] Answer - The xylem tissue transports water and minerals from the...
Vikas Yadav
May 11, 20211 min read
10 views
0 comments
Define photolysis.
Define photolysis. Answer - The phenomenon of breaking down of water molecule using solar energy absorbed by chlorophyll molecules is...
Vikas Yadav
May 11, 20211 min read
25 views
2 comments
Why is energy required by an organism even during sleep?
Why is energy required by an organism even during sleep? Answer - This is because even when an organism is asleep, various biological...
Vikas Yadav
May 11, 20211 min read
79 views
0 comments
How it can be proved that the basic structure of the Modern Periodic Table is based on the electroni
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different...
Vikas Yadav
May 10, 20211 min read
10 views
0 comments
Choose from the following. 6C, 8O, 10Ne, 11Na, 14Si (i) Elements that should be in the same period.
Choose from the following. 6C, 8O, 10Ne, 11Na, 14Si (i) Elements that should be in the same period. (ii) Elements that should be in the...
Vikas Yadav
May 10, 20211 min read
25 views
0 comments
Which group of elements could be placed in Mendeleev's Periodic Table without disturbing the origina
Which group of elements could be placed in Mendeleev's Periodic Table without disturbing the original order? Give reason. Answer - Noble...
Vikas Yadav
May 10, 20211 min read
9 views
0 comments
Identify and name the metals out of the following elements whose electronic configurations are given
Identify and name the metals out of the following elements whose electronic configurations are given below. (i) 2, 8, 2 (ii) 2, 8, 1...
Vikas Yadav
May 10, 20211 min read
10 views
0 comments
What is atomic radius? Why does atomic radius decrease across a period?
What is atomic radius? Why does atomic radius decrease across a period? Answer – Atomic radius is defined as the distance from the center...
Vikas Yadav
May 10, 20211 min read
11 views
0 comments
Give reasons: (i) The elements of group 18 are called zero valent. (ii) Group 17 elements form unine
Give reasons: (i) The elements of group 18 are called zero valent. (ii) Group 17 elements form uninegative anions. Answer – (i) Group 18...
Vikas Yadav
May 10, 20211 min read
30 views
0 comments
What do you understand by the term periodicity? Does the periodicity in properties is a function of
What do you understand by the term periodicity? Does the periodicity in properties is a function of valence electrons? Illustrate. Answer...
Vikas Yadav
May 10, 20211 min read
32 views
0 comments
Name the element which is in (i) First group and third period (ii) Seventeenth group and second peri
Name the element which is in (i) First group and third period (ii) Seventeenth group and second period. Answer - (i) Sodium (ii) Fluorine
Vikas Yadav
May 10, 20211 min read
18 views
0 comments
Arrange the following elements in the increasing order of their metallic character Mg, Ca, K
Arrange the following elements in the increasing order of their metallic character Mg, Ca, K Answer - Mg < Ca < K
Vikas Yadav
May 10, 20211 min read
4 views
0 comments
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chl
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride? [CBSE 2019] Answer - The...
Vikas Yadav
May 10, 20211 min read
7 views
0 comments
Write the formulae of chlorides of Eka-silicon and Eka-aluminium, the elements predicted by Mendelee
Write the formulae of chlorides of Eka-silicon and Eka-aluminium, the elements predicted by Mendeleev. Answer – GeCl4, GaCl3
Vikas Yadav
May 10, 20211 min read
10 views
0 comments
bottom of page