On a pressure-temperature phase diagram, the conditions under which a one-component system exists as two phases in equilibrium corresponds to:
Water drops are spherical because of ?
The Latin word formica means ant. The name formic acid is derived from this Latin word because:
2 methylbutane on reacting with bromine in the presence of sunlight gives mainly:
A photon of energ y 10.2 eV collides inelasticall y with stationary hydrogen atom in its ground state and after a few micro-second, another photon of energy 15 eV co ides with the hydrogen atom inelastically. Then a detector detects:
Water-based liquids can be described as acidic, neutral, or basic, with respect to pH. Which of these describes milk?
The major component used in preparation of different types of glasses is :
If we consider that 1/6 in place of 1/12 mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will:
What is Calcium sulphate ?
A mole contains Avogadro's number of items. What is Avogadro's number?
2,4-D, which is sold as a weed killer of the broad-leaved weeds is a synthetic version of ____________:
Hubble’s law is based on the:
A sample of chloroform before using as an anaesthetic, is tested by
The mass number of a nucleus is:
The metallurgical process in which a metal is obtained in a fused state is called:
The root-mean-square distance between the ends of a polymer chain was found to be 6.2 nm. Estimate the number of monomers in the chain, given that the length of each monomer unit is 2.1 Å.
Which one of the following types of drugs reduces fever?
Which one among the following statements regarding the properties of mixtures and compounds is not correct?
Phenyl magnesium bromide reacts with methanol to give:
The IUPAC name for the complex [Co(NO2)(NH3)5]Cl2 is:
The heat energy produced when the human body metabolises 1 gram of fat is:
Organic chemistry is the study of the compounds that make up living organisms. All organic molecules contain:
For a spontaneous change in a system at constant temperature and pressure, which of the following statements is true?
A nuclear magnetic resonance transition is shifted from the reference in a 400 MHz NMR spectrometer by 529 Hz. Calculate the chemical shift.
Which among the following is the correct decreasing of bioelements in Human Body?
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The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called:
In the process of electroplating a utensil with zinc:
The method that cannot be used for removing permanent hardness of water is:
Who is regarded as father of modern chemistry ?