If water contains dissolved calcium hydrogen carbonate (or `Ca^(2+)` ions) out of soaps and synthetic detergents, which one will you use for cleansing clothes ?

Can you use soaps and synthetic detergents to check the hardness of water ?

If a container with a porous wall filled with mixture of two gases, is placed in a evacuated space, the lighter of two gases will ascape out sooner. Write the relevant equations which you use for explanations. explanations.

Assertion: As per carbonic acid exchange theory of mineral salt absorption, CO_(2) released during respiration of roots forms 'H_(2)CO_(3) 'when dissolved in soil water Reason: H_(2)CO_(3) dissociates into H^(+) and HCO_(3) ions, where H^(+) ions exchange with anions adsorbed on clay particles.

Consider the following statement and select the option stating which ones are true (T) and which ones are false (F) (i) Emigration is the movement of individuals out of a place or country (ii) Combined contraceptive pills contain synthetic progesterone and estrogen to check ovulation (iii) Depo-Provera are estrogen derivative injections (iv) The scientific study of human population is called demography.

On passing 3 faraday of electricity through the three electrolytic cells connected in series containing Ag^+,Ca^(2+) and AI^(3+) ions respectively. The molar ratio in which the three metal ions are liberated at the electrodes is :

Suppose you have two coins which appear identical in your pocket. You know that, one is fair and one is 2 headed. If you take one coin out, toss it and get a head, then what is the probability that it was a fair coin?

Explain any one method which is used for preparing amine containing one carbon less than the reactant.