Question

31. Which of the following chemicals is used for poisoning the specimens in herbarium technique?
(1) Hg, Cl2
(2) AgNO,
(3) HCI
(4) HgCl2
No wrong answers only correct once (don't spam).​

Answer 1

Answer:mercuric chloride(HgCl2)is used in herbarium technique to preserve it from any infection and from other harmful microbes

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Explanation:

Answer 2

Question:

31. Which of the following chemicals is used for poisoning the specimens in herbarium technique?

(1) Hg, Cl₂

(2) AgNO,

(3) HCI

(4) HgCl₂

Answer:

(4) HgCl₂

Explanation:

The specimens are stored in herbarium are generally the compositions of different kind of dead plants material. The specimens which are used in herbarium are generally not affected by the microbes or bateria. The most important are holotypes, lectotypes, neotypes, and epitypes.  A herbarium serves as an invaluable conservatory of plant material of flora. However, HgCl₂ is extremely poisoning and has the ability to sublimate. HgCl₂ decomposes into metallic mercury (HgO, or just Hg) by reduction. It is corrosive to mucous membranes and used as a topical antiseptic and disinfectant appreciably at 100° C.