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440 questions found
An aliphatic compound (A) reacts with SOCI to give (B). The compound (B) is heated with ammonia to produce (C). The compound (C) is further heated with Br /KOH to yield (D). The compound (D) gives (E) when treated with NaNO /HCI at low temperature. The compound (E) is a primary alcohol which gives positive iodoform test. Identify compounds (A) to (E) with the reactions involved.
Gibbs-Helmholtz equation is represented as . For what value of will the reaction be spontaneous?
Positive
Zero
Negative
Infinite
A deep blue complex is formed when conc. ammonium hydroxide is added to an aqueous solution of CuSO. Which of the following formulae represents the complex?
What is the standard electrode potential?
Which of the following are organometallic compounds?
i) CHMgI
ii) Ni(CO)
iii) CHLi
iv) CHONa
v) (C₄H₉)₂SnCl₂
i)and ii) only
i), ii) and iii) only
i), ii), iii) and iv) only
i), ii), iii) and v) only
Name the above titration.
What are the raw materials for the production of paper?
To estimate the chloride ion present in tap water, volumetric analysis has been commonly used in the laboratory. Which of the following solutions can be used for the above mentioned titration?
BaCl2
NaOH
KCrO
AgNO
Nuclear fusion reaction is also called a thermonuclear reaction. Why?
A sequence of reactions is represented as:
Benzene (A) (B) (C)
Predict the name of the reaction that converts (B) to (C).
Benzoin condensation
Perkin’s condensation
Aldol condensation
Claisen condensation
Calculate the degree of ionization of HCN having concentration 0.01 M (Kₐ of HCN = 4.8 × 10⁻¹⁰). Also, calculate the H⁺ concentration and pH of the solution.
Write the applications of the solubility product principle and the common ion effect in qualitative salt analysis.
How are addition and condensation polymers formed? Give an example.
Draw the flow sheet diagram for the manufacture of Portland cement.
Write any two methods for the preparation of compound (Z).
How would you convert compound (Y) into pseudonitrol?
Why do these compounds give a positive iodoform test?
Identify the compounds (X), (Y) and (Z) with reactions and conditions involved.
Aniline into chlorobenzene
What is rusting? Describe the electrochemical theory of the rusting of iron. List any two methods for the prevention of rusting