Repeated or prolonged inhalation may cause asthma. Repeated or prolonged contact may cause skin sensitization. The substance can be absorbed into the body by inhalation and by ingestion.Ī harmful concentration of airborne particles can be reached quickly when dispersed.Įffects of long-term or repeated exposure Octanol/water partition coefficient as log Pow: 0.85 Solubility in water, g/100ml at 20☌: 53 (good) TURNS PINK ON EXPOSURE TO AIR AND MOISTURE. With the financial assistance of the European Commission. Prepared by an international group of experts on behalf of ILO and WHO, Provision to contain effluent from fire extinguishing.ĭo not transport with food and feedstuffs. Store in an area without drain or sewer access. Separated from oxidants and food and feedstuffs. Very toxic to aquatic life with long lasting effectsĭry. May cause damage to thyroid, bone marrow and heart through prolonged or repeated exposure if swallowed May cause allergy or asthma symptoms or breathing difficulties if inhaled Then store and dispose of according to local regulations. If appropriate, moisten first to prevent dusting. ![]() Sweep spilled substance into covered containers. Do NOT let this chemical enter the environment. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Give one or two glasses of water to drink. Vomiting.ĭo not eat, drink, or smoke during work. Wear safety goggles or eye protection in combination with breathing protection.įirst rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Ībdominal pain. ![]() Rinse skin with plenty of water or shower. Use local exhaust or breathing protection.įresh air, rest. PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! In case of fire in the surroundings, use appropriate extinguishing media. Gives off irritating or toxic fumes (or gases) in a fire. (e) Why do plants coated with vaseline or wax do not remain healthy for a long time? Give any two reasons.Not combustible. , therefore, the cell sap that oozes out contains sucrose. Analysis of the liquid oozing out was found to contain high amount of: (d) During the morning hours, using a fine blade, an incision was made to the leaves such that the phloem tissue was cut open. At the end of the experiment, the wax coated leaves are likely to show _. ![]() The plant was maintained under normal environmental conditions. (c) Some of the starch free leaves were coated with wax on both the surfaces. The starch already present in the leaf will be utilized within these 48 hours to carry out various life processes of the plant. (iv) Keep the leaves to the red light for 48 hours before starting the experiment.ĭue to higher concentration of other colour pigments in the leaves. ![]() (iii) Remove starch from the leaves by exosmosis, 48 hours before starting the experiment. (ii) Keep the plant in dark for about 48 hours before starting the experiment. (i) Expose the leaves to blue light for 48 hours before starting the experiment. (a) Which of the following would help obtain starch free leaves in the plant? Therefore, it was necessary to obtain starch free leaves in the plant before starting the experiment. However, due to presence of preformed starch in the leaves, it was difficult to find the net productivity on a fixed exposure to light source. It was observed that the leaves of the plant exposed to light for longer duration accumulated more starch. plants to understand the process of photosynthesis. Some experiments were carried out using Croton sp. Read the passage and answer any of the four questions from (a) to (e).
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