How woollen clothes keep us warm in the winter?
Woollen clothes keep us warm in winter because the air will be trapped more in those. We know that air... View Article
Latest Posts
One joule is approximately equal to (a) 0.28 cal (b) 0.32 cal (c) 0.24 cal (d) 4.2 cal
0.24 cal Calorie is the energy in the form of heat required to warm 1 kilogram of water by 10... View Article
The pH of boiling water is 6.4. This implies that boiling water is: (a) slightly basic (b) slightly acidic (c) neutral (d) amphoteric
Neutral The pH of boiling water is 6.4. This implies that boiling water is neutral. When water is boiled, both... View Article
Give possible expressions for the length and breadth of the rectangle whose area is given by (i) 25a^2 – 35a + 12 (ii) 24x^2 – 15x
A Rectangle is a four sided-polygon, having all the internal angles equal to 90 degrees. The two sides at each... View Article
With reference to black soil answer the following: (i) Name one important crop which grows in this soil (ii) Give one chemical property of this soil
(i) The important crop which grows in the black soil is cotton (ii) Chemically, the black soils are rich in... View Article
Expand the following using identities (3x – 4y)^2
Given (3x – 4y)2 Using Identity (a-b)2 = a2 – 2ab + b2 (3x – 4y)2 = (3x)2 – 2.(3x).(4y)... View Article
In five kingdom system, the main basis of classification: (a) Structure of nucleus (b) Nutrition (c) Structure of cell wall (d) Asexual reproduction
Nutrition Biological Classification of Plants and Animals was first proposed by Aristotle on the basis of simple morphological characters Carolus... View Article
How much time would it take to distribute one Avogadro number of wheat grains, if 10^10 grains are distributed each second?
Avogadro number = 6.02 x 1023 Hence, time taken = (6.02 x 1023)/1010 s = 6.02 x 1013 s Converting... View Article
How to find time? 3 hours 20 minutes after 11:45 a.m
Given 11: 45 a.m. = 11 hours 45 minutes Now, 11 hours 45 minutes + 3 hours 20 minutes =... View Article
What makes the bread soft and fluffy? (a) Finely ground flour (b) Alcohol given off during fermentation of sugar (c) Carbon dioxide gas given off during fermentation of sugar (d) Oxygen gas
Carbon dioxide gas given off during fermentation of sugar Yeast ferments the sugar found in the dough into carbon dioxide. In... View Article
Which of the following plants parts in garlic onion are edible? (a) Underground stem (b) Fleshy scale leaves (c) Tunic (d) Adventitious roots
The edible plant parts in garlic and onion are fleshy scale leaves. Therefore, the correct option is (b)
The book written by Dadabhai Naoroji to expose the British exploitation of wealth in India was called ____________ (a) Mooknayak (b) Samwad Kaumudi (c) Poverty and wealth of India (d) Poverty and Un-British Rule in India
Poverty and Un-British Rule in India Naoroji authored many books and papers, but the most significant one was ‘Poverty and... View Article
Which of the following is an application of centrifugation? (a) Pathological test of blood and urine (b) Preparing lactic cultures (c) Washing machine (d) All of above
All of above The various components are separated by centrifugation which makes the testing easier in pathological tests of blood... View Article
Define decomposition. Describe the process products of decomposition
The term decomposition means “to break down”. It typically corresponds to the disintegration or rupture of complex organic matter into... View Article
The climate of Kerala is very:
Kerala is mostly subject to the type of humid tropical wet climate experienced by most of Earth’s rainforests Therefore, the... View Article
The value of 50 coins of 50 paisa = Rs __________
50 x 50 = 2500 paisa We know that, 100 paisa = 1 Rs Hence, to get value in Rs,... View Article
The radius of hydrogen atom in the ground state is 5.3 x 10^-11. After collision with an electron it is found to have a radius of 21.2 x 10^-11 m. The principal quantum number of the final state of the atom is (a) 2 (b) 3 (c) 4 (d) 5
Given Radius of hydrogen atom in its ground state = r1 = 5.3 x 10-11 m Radius of Bohr atom... View Article
The area of isosceles right angled triangle is 16 cm^2 then the length of the hypotenuse is (a) 8 cm (b) 9 cm (c) 10 cm (d) 11 cm
Given The area of isosceles right angled triangle is 16 cm2 We know that area of isosceles right angle triangle... View Article
What is the baby mosquito called? (A) Larva (B) Pupa (C) Baby (D) Embryo
The baby mosquito is called larva. Therefore, the correct option is (a)
If the kinetic energy of a particle is doubled, de Broglie wavelength becomes: (a) 2 times (b) 4 times (c) √2 times (d) 1/√2 times
K.E. = 1/2 mv2 p = mv where p = momentum p = √(2mKE) λ = h/p (de Broglie) If... View Article
