Exam question Paper, Science Question Paper jkssb, Science questions asked in JKSSB exam, Science questions asked in ssc exam,
Q1. Which of the following is not a water pollutant?
answer: Sulphur dioxide
Sulphur dioxide (SO₂) is primarily an air pollutant, not a water pollutant. It is a gas that can contribute to acid rain when it reacts with water vapor in the atmosphere, but it is not typically found as a pollutant in water. On the other hand, zinc, copper, and nickel are metals that can contaminate water sources and are considered water pollutants.
Q2. Too much consumption of tea or coffee can result in a deficiency of:
answer: Calcium
Q3. Tea and coffee contain compounds like caffeine and tannins, which can interfere with calcium absorption in the body. High caffeine intake can lead to decreased bone density over time, potentially resulting in calcium deficiency. While tea and coffee do have some impact on the absorption of other nutrients, the most significant and well-documented effect is on calcium.
Q4. Blood pressure is the pressure exerted by blood on the walls of:
answer: Arteries
Q5. It is dangerous to observe a solar eclipse with naked eyes because:
Answer) Ultraviolet radiations from the sun burn our retina
Q6. All of the following are excretory (waste) products of animals, except
answer) Carbohydrates
Q7. Which one of the following is not a greenhouse gas found naturally in the atmosphere?
Answer) Nitrogen oxide
Q8. Which one of the following is not used as fertilizer?
answer: Ammonium sulphide
Q11. What is the role of positive catalyst in a chemical reaction?
Answer: It increases the rate of reaction.
Q12. If the equivalent resistance is to be decreased then the number of resistances should be connected in:
Answer: Parallel
Q13. When a short circuit condition occurs, the current in the circuit .
Answer ) Increases substantially.
This happens because the path of the electrical current experiences very little or no resistance, leading to a sudden surge in current flow. This can produce excess heat and potentially damage or destroy electrical appliances.
0 comments:
Post a Comment