Description : (A) Carbenes act as free radicals. (R) Only triplet carbenes act as biradical (divalent free radical).
Last Answer : (A) Carbenes act as free radicals. (R) Only triplet carbenes act as biradical (divalent free radical). A. ... IF (A) is incorrect but (R) is correct.
Description : Divalent cations are generally eliminated in marine fishes through
Last Answer : Divalent cations are generally eliminated in marine fishes through A. Gill membrane B. Anal membrane C. Fecal matter D. Oral membrane
Description : Oxygen is always divalent while sulphur can form 2, 4 and 6 bonds because
Last Answer : Oxygen is always divalent while sulphur can form 2, 4 and 6 bonds because A. High ... Vacant d-orbitals in the valency shell of Sulphur
Description : All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones
Last Answer : Answer : B
Description : Various fungi are known to accumulate considerable quantities of divalent metals, e.g. (a) Cd (b) Zn (d) All of these (c) Pb
Last Answer : Ans. ((d))
Description : Semiconductor germanium and silicon are (a) Pentavalent (b) trivalent (c) divalent (d) tetravalent
Last Answer : (d) tetravalent
Description : In n type semi conductor added impurity is (A) pentavalent. (B) divalent. (C) tetravalent. (D) trivalent.
Last Answer : (A) pentavalent.