431: Consider the following statements:
A digital signature is
1. an electronic record that identifies the certifying authority issuing it
2. used to serve as a proof of identity of an individual to access information or server on Internet
3. an electronic method of signing an electronic document and ensuring that the original content is unchanged
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
432: Which of the following statements is true?
(a) Both salinity and density of sea increase with depth
(b) Both salinity and density of sea decrease with depth
(c) Salinity increases but density of sea decreases with depth
(d) Salinity decreases but density of sea increases with depth
433: Consider the following statements regarding the High Courts in India :
I. There are eighteen High Courts in the country.
II. Three of them have jurisdiction over more than one State.
III. No Union Territory has a High Court of its own.
IV. Judges of the High Court hold office till the age of 62.
Which of these statements is/are correct ?
(a) I, II and IV
(b) II and IV
(c) I and IV
(d) IV only
434: Mycorrhiza is a symbiotic association between
(a) Bacteria and roots of higher plants
(b) Algae and roofs of orchids
(c) Fungi and roots of higher plants
(d) Protozoa and roots of higher plants
435: Mouse is to cat as fly is to
(a) rat
(b) animal
(c) spider
(d) horse