Questions

Cottage industry is a manufacturing activity of people operated at home. The handcrafts which were sold in the society are examples of cottage industy products. It is a small scale industry in which the labor force is mostly family members or individuals.

Foreign keys are the columns of a table that points to the primary key of another table. They act as a cross-reference between tables.

In detail : A Foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table or the same table. In simpler words, the foreign key is defined in a second table, but it refers to the primary key or a unique key in the first table.

The processes both osmosis and diffusion come under passive transport and require no energy. The movement of solute from the region of higher concentration to the region of lower concentration is nothing but diffusion.

The speed of all the electromagnetic radiation are always   same   and   equal   to   the numerical value 3 x 10^8m/sec.

Article-20 of the Constitutiongrants protection against arbitrary and excessive punishment to an accused person. It contains three provisions in that direction No Ex-post-facto Law No person shall be convicted of any offence except for violation of a law in force at the time of the commission of the Act nor subjected to a penalty greater than that prescribed by the law in force at the time ofthe commission of the Act.No Double Jeopardy No person shall be prosecuted and punished for the same offence more than once.No Self-incrimination No person accused of any offence shall be compelled to be a witness against himself.As per the Constitution, a person/entity can be tried retrospectively in certain instances as provided by the law

The definition of Lysogeny is a dormant viral infection of bacteria in which the genetic material of a virus combines with that of a host bacterium.

National security refers to security of a nation state, including its citizens, economy&institutions, is regarded as a duty of govt. It is celebrated every year on 4th March. The 1st National Security Day observed in the year 1972.