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Showing posts from March 23, 2021

Why does cake become fluffy after adding baking soda

On adding baking soda to the cake batter, it would undergo thermal decomposition due to the heat trapped in the batter. Thus, the following reaction takes place :- 2NaHCO3 (s) ----> Na2CO3 (aq) + CO2 (g) + H2O (l). The CO2 evolved makes the cake fluffy.

How did valli react when she saw the dead cow by the roadside?

Valli enjoyed watching a young cow with tail high running in middle of the road on her way to town but when the bus was returning back to the village she found that the cow was lying dead by the roadside and there was blood was spread all over. The cow might had been struck with some fast moving vehicle. This haunted her and from then on she refused to look out of the window on her way back to the village.

Which term of the AP 3, 15, 27, 39,...... will be 132 more than its 54th term?

a=3 d=15-3=12 Let the term of the ap be añ añ=a54+132  a+(n-1)d =a+53d+132  Putting the values  3+(n-1)12 =3+53×12+132 3+12n-12 =3+636+132 12n-9 =3+768 12n-9=771 12n =771+9 12n =780 n =780/12  n=65