CTET Solved Paper - CTET September 2015
141. Which one of the following takes place when water transforms from liquid to gaseous phase?
- Option : A
- Explanation : (A) When water transform from liquid to gaseous phase, distance between the particles changed because particles of liquid are slightly closed to each other which cannot move freely. When liquid is heated and converted into gaseous phase its particles are far apart from each other and move freely.
142. Which fuel has the highest calorific value from among the following?
- Option : B
- Explanation : (B) The calorific value of a fuel is the quantity of heat produced by its combustion, at constant pressure and under normal condition.
Fuel Calorific Value (kJ /kg) Diesel 44800 Hydrogen 141790 Coal 26000 Petrol 48000
Therefore, hydrogen has highest calorific value.
143. Match the organisms in Column A with their actions in Column B
| Column A | Column B |
| A. Lactobacillus | 1. Nitrogen fixation |
| B. Protozoan | 2. AIDS |
| C. Rhizobium | 3. Malaria |
| D. Virus | 4. Curd formation |
The correct matching is
A B C D
- Option : C
- Explanation : (C) Lactobacillus is a bacteria which is useful in the conversion of milk to curd. Malaria is caused by Plasmodium which is a protozoan and is spread due to biting of female Anopheles mosquito. Rhizobium helps in nitrogen fixation in leguminous plant. AIDS is a viral disease caused by Human Immunodeficiency Virus (HIV).
144. Select the correct statement from among the following.
- Option : C
- Explanation : (C) In plants, there are several other coloured leaf present other than green. Most of us think that only green plant do the process of photosynthesis, which is wrong. All the leaf carry out the function of photosynthesis irrespective of their colour. The chlorophyll in non green plant is present hidden condition in leaf colour.
- Option : A
- Explanation : (A) Seeds are present only in the fruits of the plants because seeds are formed after fertilisation. So, presence of seeds in ladyfinger shows that it's a fruit.
