Previous year MCQs

General science UPPSC 2006 GS-I
Question

The bacteria responsible for fixing nitrogen in Soyabean is:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Rhizobium japonicum

Detailed Solution:

The correct answer is “Rhizobium japonicum”.
Rhizobium japonicum (now often referred to as Bradyrhizobium japonicum) forms symbiotic relationships with soybean plants, facilitating the process of nitrogen fixation.

Similar Questions:

When soggy biscuits are kept inside the fridge for sometime they become crisp because
  1. A) cooling releases extra moisture
  2. B) humidity inside the fridge is low and extra moisture is absorbed
  3. C) humidity inside the fridge is high and extra, moisture is absorbed
  4. D) pressure inside the fridge is high and helps in releasing extra moisture.
Consider the following statements about haemoglobin:

1. It contains iron
2. It is a carrier of oxygen in the blood.
3. It imparts red colour to the blood.
4. It provides immunity against certain diseases.

Of these statements:
  1. A) 1, 2 and 4 are correct
  2. B) 1, 2 and 3 are correct
  3. C) 2, 3 and 4 are correct
  4. D) 1, 3 and 4 are correct
I.C. chips for computers are usually made of:
  1. A) leaf
  2. B) chromium
  3. C) silicon
  4. D) gold
When a glass rod is placed in steam, its length increases but its width:
  1. A) remains unchanged
  2. B) decreases
  3. C) increases
  4. D) becomes irregular
Which one of the following is the main constituent of LPG ?
  1. A) Hexane
  2. B) Pentane
  3. C) Butane
  4. D) Methane
Which one of the following is used in food preservation?
  1. A) Sodium Carbonate
  2. B) Acetylene
  3. C) Benzoic Acid
  4. D) Sodium Chloride
The First day session of Indian Constituent Assembly was chaired by
  1. A) Dr. Rajendra Prasad
  2. B) Pandit Jawahar Lai Nehru
  3. C) Dr. B.R.Ambedkar
  4. D) Dr. Sachchidanand Sinha
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  1. A) Calcium sulphate
  2. B) Magnesium chloride
  3. C) Magnesium sulphate
  4. D) Sodium chloride
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  1. A) spontaneous radiation
  2. B) dispersed radiation
  3. C) scattered radiation
  4. D) stimulated radiation
Foreign Corporation are governed by
  1. A) Special Act of Parliament
  2. B) Ministry of Foreign Affairs, Government o India
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  2. B) Infrared rays
  3. C) Ultraviolet rays
  4. D) X-rays
Normal temperature of human body is 98.4°F. Its equivalent temperature in °C is:
  1. A) 40.16
  2. B) 36.89
  3. C) 35.72
  4. D) 32.36