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There are two medium L1 and L2 of refractive index n1 and n2 respectively (n2  > n1 > 1). In which of the following condition the total internal reflection may occur: a) When the light travel from medium L1 to medium L2. b) When the light travels from medium L2 to medium L1. c) When the light travel from medium L1 to air. d) When the light travels from air to medium L2. Which of the following statement is correct?
Which of the following are the properties of a proton? 1. Proton is a positively charged particle. 2. Protons are found outside the nucleus of an atom. 3. The charge of a proton is equal and opposite to the charge of an electron.
The phenomenon used for obtaining grating spectra is diffraction. Which phenomenon is used for obtaining prism spectra?
Proton decoupled 13C NMR spectrum of a bicyclooctane (C8H14), exhibits only two signals. The structure of the compound is
The indicator used in nonaqueous titration of barbiturates is:
Propene as well as 2-Butene(cis) will show equal number of signals in their NMR spectra.
The NMR spectra of the functional isomers of the molecular formula C2H6O show _________ and _________ signals respectively.
What is the use of biochar in farming? 1. Biochar can be used as a part of the growing medium in vertical farming. 2. When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms. 3. When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time. Which of the statements given above is/are correct?
Large, medium and small ships are used to bring water. 4 large ships carry as much water as 7 small ships, 3 medium ships carry the same amount of water as 2 large ships and 1 small ship. 15 large, 7 medium and 14 small ships, each made 36 journeys and brought a certain quantity of water. In how many journeys would 12 large, 14 medium and 21 small ships bring the same quantity ?
Consider the following statements about molecular spectra:
P. CH4 does not give pure rotational Raman lines
Q. SF6 could be studied by rotational Raman spectroscopy
R. N2 shows infrared absorption spectrum
S. CH3CH3 shows vibrational Raman and infrared absorption lines
T. H2O2 shows pure rotational spectrum
Choose the right combination of correct statements.