2821: Which one of the following was initially the most powerful city state of India in the 6th century B.C. ?
(a) Gandhar
(b) Kamboj
(c) Kashi
(d) Magadh
2822: Colour blindness is:
(a) More common among women
(b) Very rare in women
(c) Very rare in men
(d) Found to the same extent in both the sexes
2823: With reference to 'Near Field Communication (NFC) Technology', which of the following statements is/are correct?
1. It is a contactless communication technology that uses electromagnetic radio fields.
2. NFC is designed for use by devices which can be at a distance of even a metre from each other
3. NFC can use encryption when sending sensitive information.
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 3 Only
(c) 1 and 3 only
(d) 1, 2 and 3
2824: In a group of six women there are four table tennis players, four post-graduates in Economics, one post-graduate in Commerce and three bank employees. Vimala and Kamala are among the bank employees while Amala and Komala are unemployed. Komala and Nirmala are among the table tennis players. Amala, Kamala, Komala and Nirmala are postgraduates in Economics of whom two are bank employees. If Shyamala is a postgraduate in Commerce who among the following is both a table tennis player and a bank employee?
(a) Nirmala
(b) Shyamala
(c) Amala
(d) Komala
2825: Man cannot digest cellulose whereas cows can do so because
(a) Their gut contains certain bacteria capable of digesting cellulose
(b) They have a many-chambered stomach
(c) They have efficient grinding molars
(d) They produce an enzyme cellulose which can digest cellulose