Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

All the forms of matter except gases emit electromagnetic radiation continuously. The gases which electrically or thermally excited emit a certain wavelength only, then which of the following is/are true about the process (i) The spacing between the atoms in the other forms of matter is high than in gas (ii) The spacing between the atoms in gases is high than the other forms of matter (iii) The energy of the emitted radiation depends on the spacing between the atoms (iv) The wavelength of the emitted radiation depends on the spacing between the atoms 
A collection of N atoms is exposed to a strong resonant electromagnetic radiation with Ng atoms in the ground state and N atoms in the excited state, such that Ng + Ne = N. This collection of two-level atoms will have the following population distribution
What does the term ‘carbon count’ means? 1. A measure of the amount of carbon dioxide you produce through your lifestyle every day. 2. A measure of the amount of carbon present on Earth. 3. A measure of the amount of carbon and carbon dioxide on Earth. Select the correct answer using the code given below.
Which option is correct about IUPAC nomenclature for branched-chain saturated hydrocarbon? The longest chain of carbon atoms in the structure of the compound is found first. The position of the alkyl group is indicated by writing the number of carbon atoms to which it is attached.
In this question, two statements are given followed by a conclusion. Find out which of the alternatives justifies the given conclusion. Statements: 1) Coals are atoms of carbon. 2) Diamonds are atoms of carbon. Conclusion: Diamonds are coal.
If different carbon atoms are joined together to form open chain of carbon atoms with single bond only in a compound then such compounds are termed as
Consider the following postulates of the atomic theory by John Dalton. Identify the correct ones. Atoms of various elements exhibit different natures. They do not have similar features. By combining in a ratio of the whole number, atoms form the compounds. Atoms are never destroyed nor created during any chemical reaction. 
In the following question, the 1st and the last part of the sentence/ passage are numbered 1 and 6. The rest of the sentence/passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Global warming is the rise in average surface temperature of the earth globally. P. It is caused by the greenhouse effect of increased level of greenhouse gases. Q. Deforestation also increases carbon dioxide emissions. R. Greenhouse gases include carbon dioxide, CFCs, etc. S. The increasing use of fossil fuels is a major cause of carbon dioxide emission. 6. Carbon dioxide traps heat and causes the greenhouse effect.
Which of the following statements is NOT correct about Carbon and its allotropes? I. Graphite contains delocalized electrons. II. The hybridization state of carbon in fullerene is sp2. III. The number of carbon compounds is very large because carbon is tetravalent.
Which of the following features of atoms determine the degree to which the solute atoms dissolve in the solvent atoms? 1. Atomic size factor 2. Crystal structure 3. Electronegativity