Three unknown solutions are taken in test tubes. Different indicators are added to these solutions to test their nature.
Identify the substances X, Y and Z.
|A||Soap solution||Lime water||Grape juice|
|B||Milk of magnesia||Lemon juice||Slaked lime|
|C||Salt solution||Tamarind juice||Calamine solution|
|D||Antacid||Sour milk||Glucose solution|
The given graph shows temperature changes in a beaker of water. Select the incorrect option regarding it.
AAt point P, the beaker was in refrigerator.
BAt point Q, the beaker was put on fire to be heated.
CAt point R, the water in the beaker changed its phase from solid to liquid.
DIf heating is continued further after point S, gradually there will be no water left in the beaker.
Three persons P, Q and R are standing in a queue. There are five persons between P and Q and eight other persons between Q and R. If there are only three persons ahead of R and 21 persons behind P, what could be the minimum number of persons in the queue?
pls tell the answer