Description : Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells) (a) both sense and anti-sense RNA (b) a particular hormone (c) an antifeedant (d) a toxic protein.
Last Answer : a) both sense and anti-sense RNA
Description : Which species of chromium is toxic in water: (A) Cr+2 (B) Cr+3 (C) Cr + 6 (D) Cr is non-toxic element
Last Answer : (C) Cr + 6
Description : Nicotine present in tobacco is a/an (A) Alkaloid (B) Terpene (C) Steroid (D) Protein
Last Answer : Answer : A
Description : Which drug is present in tobacco?
Last Answer : Nicotine
Description : Which is the harmful substance present in the tobacco?
Description : Pick out the wrong statement. (A) Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust (B) NO2 is capable of penetrating the troposphere and ... at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2
Last Answer : (D) H2S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2
Description : Toxic agents present in flood which interface with thyroxine synthesis lead to the development of
Last Answer : Toxic agents present in flood which interface with thyroxine synthesis lead to the development of A ... . Cretinism C. Simple goiter D. Thyrotoxicosis
Description : Toxic substance present in colocasia
Last Answer : Ans. Ca oxalate
Description : In preference to nitrogen -oxygen mixture (present in air), a helium -oxygen mixture is used by divers in deep sea because helium (a) is less toxic than nitrogen (b) can readily mix with oxygen ... ) is lighter than nitrogen (d) is less soluble in blood than nitrogen at high pressure under the sea
Last Answer : Ans:(d)
Description : Toxic agents present in food which interfere with thyroxine synthesis lead to the development of (a) toxic goitre (b) cretinism (c) simple goitre (d) thyrotoxicosis
Last Answer : (c) simple goitre
Description : Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these
Last Answer : (B) Potassium cyanide
Description : Active toxic material present in the formulation is a). Acid equivalent b). Phytochemical c). Active ingredient d). Surfactant
Last Answer : c). Active ingredient