Calculate the molecular mass a gas if the vapour density of the gas is 22.
Molecular mass = 2 x vapour density = 2 x 22 = 44 Therefore, molecular mass of a gas will... View Article
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What happens to the pressure 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 of the following substance is not sour to taste? a. Allum b. Lemon Juice c.Tamarind d.Raw Mangoes
Alum is bitter to taste and soapy to touch. This is because these substances are basic in nature.
On applying forced vibrations, the resonance wave becomes very fast when
On applying forced vibrations, the resonance wave becomes very fast when damping force is small.
What is the term used for two solutions having same osmotic pressure at a given temperature?
Two solutions having same osmotic pressure at a given temperature are called isotonic solutions.
What do you mean by organic farming?
Organic farming is a type of farming which involves use of eco-friendly technologies, for sustainable development. Organic farming helps in... View Article
In heterogenous catalysis of a gaseous reactants over solid catalyst
The reactant gases adsorb on the surface of catalyst and on the surface itself reaction occurs.
Following reaction is an example of which type of reaction: NaCl + AgNO3 gives AgCl + NaNO3
Answer: Given reaction is NaCl + AgNO3→ AgCl + NaNO3 Since there is an exchange of ions between the reactants,... View Article
Which is not a function of the male reproductive system in humans? a)The secretion and production of male sex hormones b)The function of nourishing the growing embryo is carried out by the female reproductive system. c)To produce, transport, maintain, and to nourish sperm d)Discharging of the sperm within the female reproductive tract
The function of nourishing the growing embryo is carried out by the female reproductive system.
How does the ionisation enthalpy vary across the periodic table?
Ionization enthalpy decreases down the group on moving from top to bottom in a periodic table.
Presence of undesirable solid or gaseous particles in the air promotes:
The presence of undesirable solid or gaseous particles in the air promotes tropospheric pollution. Explanation The presence of undesirable solids... View Article
Which of the following functions is carried out by phloem?a. Phloem is responsible for the transport of food from the leaves to all the parts of the plant. b. It transports water and other soluble nutrients to the rest of the plant c. Tracheids help phloem transport food d. Phloem allows the plant to grow taller and roots to grow longer.
Phloem is responsible for the transport of food from the leaves to all the parts of the plant.
Action of heat on potassium permanganate at 746K results in formation of:
Action of heat on potassium permanganate at 746K results in formation of potassium manganate.
Non-competitive inhibitor changes the active site of enzyme after binding at:
Non-competitive inhibitor changes the active site of enzyme after binding at allosteric site.
Increase in which of the following gases cause global warming? (a) Carbon dioxide (b) Oxygen (c) Nitrogen (d) Argon
Carbon dioxide is one of the main greenhouse gases that is responsible for heating of earth.
Name the instrument which can accurately measure the thickness of a paper.
Screw gauge is used to measure the thickness of a paper as it has the smallest least count.
Out of transpiration, guttation and bleeding, which is/are not natural processes?
Bleeding is not a natural process. This process occurs only in case a plant gets ‘injured.’
Quantum mechanics is based on a fundamental equation which is called
Quantum mechanics is based on a fundamental equation which is called Schrodinger equation.
Name the compound with all bond angles that are exactly 109 degree 28.
Carbon tetrachloride has regular tetrahedral geometry with bond angles equal to 109o 28€™.
What happens when the temperature of a solution of an weak electrolyte increases?
It results in an increase in degree of dissociation causing increase in van’t Hoff factor.
