When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the different in
(a) Loudness only
(b) Quality only
(c) Pitch, loudness and quality
(d) Pitch and loudness
Domestic electrical wiring is basically a
(a) Series connection within each room and parallel connection elsewhere
(b) Combination of series and parallel connections
(c) Series connection
(d) Parallel connection
Nitrogen is fixed in ecosystems in the ways stated below. Which one of these is false?
(a) By denitrification
(b) By industrially synthesized fertilizer
(c) By cynobacteria
(d) By electrical discharges in the atmosphere
Assertion (A): Myopia is a condition in which near objects can be seen clearly while distant objects apear blurred.
Reason (R): It is due to increased convexity of lens.
(a) A and R is true and R is the correct explanation of A.
(b) A and R is true but R is not correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
The part of DNA molecule sequencing of which determines how information is stored.
(c) Glycerol attachments
(d) Nitrogenous bases
The exact replication of DNA is possible due to
(b) the fact that the DNA molecule are enclosed within a nuclear membrane
(c) the genetic code
(d) the base-pairing rules
The green fuel involves producing clear-burning hydrogen fuel from
(a) Sewage biogas
(d) All of these
Made from a variety of materials, such as carbon, which inhibit the flow of current
The waste undergoes biodegradation under anaerobic conditions to produce
(a) Nitrogen-rich biogas
(b) Ethane-rich biogas
(c) Methane-rich biogas
(d) Ethylene-rich biogas
Increased fertilizer use over the past 50 years is responsible for a dramatic rise in
(a) Nitrous oxide
(b) Nitrogen oxide
(c) Sulphur oxide
(d) All the above