Which of the following acts as a stimulus in the process of hydrotropism?(a) hydrocarbon (b) hydrogen oxide (c) hydrogen chloride (d) hydrogen peroxide
(b) Hydrogen oxide.
In the process of hydrotropism water or hydrogen oxide (OH) acts as a stimulus.
Related Articles
- In hydrogen peroxide (H2O2), the proportion of hydrogen and oxygen by mass is :(a) 1 : 8 (b) 1 : 16 (c) 8 : 1 (d) 16 : 1
- Which of the following cannot be separated from air by the process of fractional distillation ?(a) oxygen (b) argon (c) hydrogen (d) nitrogen
- Write the balanced equation for the following chemical reactions.(i) Hydrogen + Chlorine → Hydrogen chloride(ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride(iii) Sodium + Water → Sodium hydroxide + Hydrogen.
- Write the balanced chemical equation for the following and identify the type of reaction in each case :(a) Potassium bromide (aq) + Barium iodide (aq) → Potassium iodide (aq) + Barium(b) Zinc carbonate(s) → Zinc oxide (s) + Carbon dioxide (g) bromide(s)(c) Hydrogen (g) + Chloride (g) → Hydrogen chloride (g)(d) Magnesium (s) + Hydrochloric acid (aq) → Magnesium chloride (aq) + Hydrogen (g)
- In which of the following conditions, the distance between the molecules of hydrogen gas would increase?Increasing pressure on hydrogen contained in a closed containerSome hydrogen gas leaking out of the containerIncreasing the volume of the container of hydrogen gasAdding more hydrogen gas to the container without increasing the volume of the container(a) (i) and (iii)(b) (i) and (iv)(c) (ii) and (iii) (d) (ii) and (iv)
- Which of the following raw materials is available in the air for photosynthesis?(a) Oxygen(b) Carbon dioxide(c) Nitrogen(d) Hydrogen
- The addition of hydrogen to a substance is called ___________ whereas removal of hydrogen is called ______________.
- Which of the following compounds are ionic and which are covalent?Urea, Cane sugar, Hydrogen chloride, Sodium chloride, Ammonium chloride, Carbon tetrachloride, Ammonia, alcohol, Magnesium chloride.
- In the context of redox reactions, the removal of hydrogen from a substance is known as:(a) oxidation (b) dehydration (c) reduction (d) dehydrogenation
- What type of bonds are present in hydrogen chloride and oxygen?
- The major cause of environmental pollution is the use of: (a) hydrogen as fuel (b) biomass energy (c) ocean energy (d) fossil fuels
- Give the names of the elements present in the following compounds.(a) Quick lime(b) Hydrogen bromide(c) Baking powder(d) Potassium sulphate.
- (a) What is the source of energy of the sun and other stars?(b) Describe the working of a hydrogen bomb. (c) What is common between the sun and a hydrogen bomb?
- Which of the two is a cleaner fuel: hydrogen or CNG? Why?
- What is the stimulus in : (a) phototropism ? (b) geotropism ? (c) chemotropism ? (d) hydrotropism ? (e) thigmotropism ?
Kickstart Your Career
Get certified by completing the course
Get Started