Questions

The code segments B and D will compile without any error. A is not a valid way to construct a StringBuffer, you need to create a StringBuffer object using "new". B is a valid construction of a Boolean (any string other than "true" or "false" to the Boolean constructor will result in a Boolean with a value of "false"). C will fail to compile because the valid range for a byte is -128 to +127 (i.e., 8 bits, signed). D is correct, 0x1234 is the hexadecimal representation in java. E fails to compile because the compiler interprets 1.2 as a double being assigned to a float (down-casting), which is not valid. You either need an explicit cast, as in "(float)1.2" or "1.2f", to indicate a float.

The molar mass of H2O can be calculated as the following.

M(H2O)= [2 x M(H)] + [M(O)].

And we know that M(H) = 1g/mol, M(O) = 16g/mol.

So, M(H2O)= 2x1 + 16 = 18g/mol,

That means 1 mole of H2O contains 18g.

Hence, one mole of H2O corresponds to 18 grams.

The C.M of Kerala, Pinarayi Vijayan has recently launched e-health program “Jeevan Rekha” to make electronic health records of a population in Thiruvananthapuram.

It is a first-of-its-kind initiative in India to provide a centralised database of healthcare information and efficient service delivery to the people.

The new system would help in creating a good hospital management system and patient-friendly atmosphere in hospitals.

Once data of a patient is centralised, it would help the person get continuous treatment at all hospitals in the state.

Ozone molecule has one single bond and one double bond.

Towel gets wetter and wetter the more it dries because we use that towel which is dried after used.