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Consider a set U of 23 different compounds in a Chemistry lab. There is a subset S of U of 9  compounds, each of which reacts with exactly 3 compounds of U. Consider the following statements:  I. Each compound in U\S reacts with an odd number of compounds. II. At least one compound in U\S reacts with an odd number of compounds. III. Each compound in U\S reacts with an even number of compounds. Which one of the above statements is ALWAYS TRUE?
Which of the following statement(s) is/are CORRECT? I. Carbon compounds linked by only single bond are called saturated compounds. II. Carbon compounds having double or triple bonds are called unsaturated compounds. III. Saturated carbon compounds are more reactive than unsaturated carbon compounds.
Given below are characteristics of an “ionic compound”. Identify the option that gives INCORRECT information. A. Ionic compounds are generally found in solid state. B. Ionic compounds have low melting point and high boiling point. C. Ionic compounds are soluble in solvents like benzene, etc. D. The X-ray analysis of ionic compounds reveals that they exist as molecules.
Consider the following statements: A. Organic compounds are compounds of carbon. B. Organic compounds contain covalent bonds. C. Carbon tetrachloride is not an organic compound. Which of the above statements is/are correct? Select the code for the correct answer from the options given below:
In which of the compounds given below, bonding among atoms is explained on the basis of ionic, covalent as well as coordinate covalent bonds ?
Given below are two premises (a) and (b). Four conclusions are drawn from them. Select the code that states validly drawn conclusion(s) [taking the premises individually or jointly]. Premises:   (a) All diamonds are precious stones. (b) Some carbon compounds are diamonds. Conclusions:  (i) All precious stones are diamonds. (ii) Some non-carbon compounds are precious stones. (iii) All precious stones are stones compounds. (iv) Some carbon compounds are precious stones.
Covalent interactions are generally weaker than non-covalent interactions.
The labels of two bottles containing compounds I and II were lost. The names of these compounds were available in a register. Following are structures of I and II. Which combination of reagents cannot help in distinguishing these compounds: (I) NaHCO3                   (II) NaNO2 / HCl                        (III) CHCl3 + NaOH        (IV) Neutral FeCl3
Which of the following statements are CORRECT? I. Ionic compounds have high melting and boiling points. II. Carbon compounds are a poor conductor of electricity. III. Carbon compounds have low melting and boiling point.
Lucas test was conducted on three compounds A, B and C. Compounds A and B showed turbidity at room temperature, but compound C became turbid only after heating. Which of the compounds has a tertiary structure?