Select the correct statement regarding the ECG of man.(i)P-wave represents auricular repolarization.(ii)P-wave represents ventricular repolarization.(iii)P-wave represents auricular depolarization.(iv)P-wave represents ventricular depolarization.

Consider the electronic configurations, (i) 1s^(2)2s^(2)2p^(6)3s^(1) (ii) 1s^(2)2s^(2)2p^(6)3s^(0) Which of the following statements is not true? (a)Energy is required to change (i) to (ii) (b) (i)represents electronic configuration of Na-atom (c) (i) and (ii) may represent ground state electronic configuration of different or same elements (d) Less energy is required to remove one electron from (ii) than from (i)

ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented

Read the following statements carefully and select the appropriate option given below. (i) The distal end of the filament is attached to the thalamus or the petal of the flower. (ii) The pollen grains represent the male sporophyte. (iii) The microsporangia develop further and become embryo sac. (iv) In over 60 per cent of naked seeded plant, pollen grains are shed at this 2-celled stage. (v) As anthers mature and dehydrate the microspores, dissociate from each other and develop into pollen grains.

Select correct statement. (i) Mixture of NH_4Cl and NaNO_2 on heating gives N_2 gas . ( ii) CFC is used as refrigerating fluid and as propellant in aerosols ( iii) Phosgene is formed when P_4 reacts with NaOH (iv) Phosgene dissolves in water forming P_2O_5

Suppose p denotes the statement " sqrt3 is an irrational number" and q denotes the statement "Kochi is a city in Kerala".Write the verbal sentences representing the following statements ~p rarr q

Suppose p denotes the statement " sqrt3 is an irrational number" and q denotes the statement "Kochi is a city in Kerala".Write the verbal sentances representing the following statements p rarr ~q