What would happen to the transpiration on an extremely hot day?
The higher the temperature, the higher is the rate of evaporation, and therefore the higher the rate of transpiration!
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What term is used to describe the number of nearest neighbours?
The number of nearest neighbours closest to the sphere in close packing is called Coordination number.
What happens when a physical change takes place in a substance?
In a physical change, properties of substance like state, colour may change. No new product is formed.
What happens when the volume of a fixed mass of gas is doubled?
Pressure is inversely proportional to volume. Thus, when volume is doubled, the pressure is halved.
Which imaginary line divides India into almost two equal parts?
Tropic of cancer is the imaginary line that divides India into almost two equal parts. Tropic of cancer The Tropic... View Article
Name the drying agent used for purifying hydrogen chloride gas.
Conc. sulphuric acid is used as a drying agent for purifying hydrogen chloride gas. Reason Concentrated sulphuric acid being hygroscopic... View Article
Which metallic spoon can be used to stir lead nitrate solution?
Silver is less reactive than lead, so there will be no displacement reaction.
What is the maximum covalency of first elements of each group ?
The number of electron pairs that an atom shares with one or more atoms of the same or different kind... View Article
What was the name given to Eka-silicon after it was discovered?
Eka-silicon was later named as Germanium.
Write the solution set of the equarion x^2+x-2=0 in roster form
Given: x2+x-2 = 0 To find the solution of the above equation in roster form, we need to factorise it.... View Article
How are simple tissues different from complex tissues in plants?
Simple tissue Complex tissue These tissues consist of only one type of cells. These tissues are made up of more... View Article
From where energy is provided for the synthesis of ATP in PS II?
ATP stands for Adenosine triphosphate is called the energy currency of the cell. It is an organic compound comprised of... View Article
Explain how auxins promote the growth of a tendril around a support.
Answer: Auxin is a plant hormone that is synthesized at the tip of the shoot. It helps the cell grow... View Article
Which hormone among these is not secreted by an endocrine gland?
Answer (b) ANF is not secreted by an endocrine gland. Explanation ANF stands for atrial natriuretic factor is secreted by the atrial... View Article
Find the common factors of (a) 4,8,and 12 (b) 5,15, and 25
(a) 4,8 and 12 Factors of 4 = 1,2,4 Factors of 8 = 1,2,4,8 Factors of 12 = 1,2,4, The common factors of... View Article
Name the force that is used to dry clothes in a washing machine.
Centrifugal Force acts along the radius outwards and hence can be used to throw the water molecules on the clothes... View Article
To what is the rate of change in momentum directly proportional?
The rate of change in momentum is directly proportional to the applied force and takes place in the direction in... View Article
The canal rays led to the discovery of which subatomic particle?
Canal rays are positively charged radiations which led to the discovery of another sub-atomic particle called protons.
How are the electric needs of an artificial satellite fulfilled?
The electric needs of an artificial satellite are fulfilled by using solar panels which harness power from sun.
What is the function of salt bridge in an electrochemical cell?
Salt Bridge keeps the solution in two compartments electrically neutral and maintains the current flow.
