CBSE Class 10 Science 2017 · Paper 531/1 · Question 27
A student while studying a saponification-reaction on adding 20% NaOH solution to a colourless vegetable oil taken in a beaker observes that
- (a)the outer surface of the beaker becomes cold.
- (b)the colour of the mixture becomes brown.
- (c)there is a brisk effervescence in the beaker.
- (d)the outer surface of the beaker becomes hot.
Answer
(d) the outer surface of the beaker becomes hot.
🔒 Step-by-step solution
Sign up free to see every step of how it is worked out.
From the board papers
More questions from Carbon and its Compounds
Class 10 Science — every question with an expert-verified, step-by-step solution.
- Q1 Ethane, with the molecular formula C₂H₆ has
- Q1 What would be the electron dot structure of carbon dioxide which…
- Q2 Butanone is a four-carbon compound with the functional group
- Q2 What would be the electron dot structure of a molecule of sulphur w…
- Q3 While cooking, if the bottom of the vessel is getting blackened o…
- Q4 Explain the nature of the covalent bond using the bond formation…
- Q5 Draw the electron dot structures for (a) ethanoic acid. (b) H₂S. (…
- Q6 What is an homologous series? Explain with an example.
- Q7 How can ethanol and ethanoic acid be differentiated on the basis…
- Q8 Why does micelle formation take place when soap is added to water…
- Q9 Why are carbon and its compounds used as fuels for most applic…
- Q10 Explain the formation of scum when hard water is treated with s…
All 442 questions on Carbon and its Compounds → Browse all Science chapters →