Mahatma Gandhi's Dandi March, a great event in Indian freedom struggle, was associated with________.

Match List I with List II and select the correct answer using the code given below the lists:

List I                                                                      List II

(Name)                                                               (Formula)

A. Bleaching powder                                          $1.$ NaHCO₃
B. Baking soda                                                   $2.$ Na₂CO₃.10H₂O
C. Washing soda                                               $3.$ Ca(OH)₂
D. Slaked lime                                                   $4.$ CaOCl₂

The number of water molecules associated with copper sulphate molecule to form crystals is

Silver articles become black after some time when exposed to air because_____________.

If x is the temperature of a system in Kelvin and y is the temperature of the system in °C, then the correct relation between them is___________.

The resistivity p of a material may be expressed in units of____________

The electromagnetic waves, which are used for satellite communication, are_______.

Which one of the following is the correct sequence of organs that occur in the path of urine flow in human body?

Which of the following endocrine glands is not found in pair in humans?