3681: Lothal is
(a) A closed water system
(b) A poisonous gas
(c) A place in Gujarat where excavations have established a link with the Indus Valley civilisation
(d) Legal action taken against defectors
3682: Why camphor disappears when kept on a plate?
(a) It sublimes
(b) It reacts with the metal of the container
(c) It reacts with the gases of the air
(d) None of the above
3683: What is the pH level of blood of normal person?
(a) 4.5-4.5
(b) 6.45-6.55
(c) 7.35-7.45
(d) 8.25-8.35
3684: Less dew is formed on cloudy nights because:
(a) Clouds absorb the falling dew
(b) Clouds scatter moisture
(c) In cloudy nights the radiation takes place very slowly
(d) In cloudy nights the radiation takes place very quickly
3685: Consider the following statements about Madam Bhikaji Cama :
1. Madam Cama unfurled the National Flag at the international Socialist Conference in Paris in the year 1907.
2. Madam Cama served as private secretary to Dadabhai Naoroji.
3. Madam Cama was born to Parsi parents.
Which of the statements given above is/are correct?
(a) 1 and 2, only
(b) 2 and 3, only
(c) 3 only
(d) 1, 2 and 3