Question

1. Explain the different types of friction.


2. Write in detail about:

a) Kharif crop b) Rabi Crop c) Zaid Crop.


3. Write the balanced equations for the following reactions :


a) Copper heated strongly in air.


b) Iron reacts with steam.


c) Sodium reacts with dilute Sulphuric acid.

d) Zinc is added to sodium hydroxide.


e) Magnesium added to copper Sulphate solution.


please answer the question​

Answer 1

Answer:

1. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. Fluid friction occurs in fluids, which are liquids or gases.

2. a) The word “Kharif” is Arabic for autumn since the season coincides with the beginning of autumn or winter. As cultivation of these crops happens in the monsoon season, another name for Kharif crop is monsoon crop. The Kharif season differs in every state of the country but is generally from June to September. We sow the crop at the beginning of the monsoon season around June and harvest by September or October. Rice, maize, bajra, ragi, soybean, groundnut, cotton are all Kharif crops.

b) The Arabic translation of the word”Rabi”, is spring. As these crops harvest in the springtime hence the name. The Rabi season usually starts in November and lasts up to March or April. Cultivation of Rabi crop is mainly through irrigation since monsoons are already over by November. In fact, unseasonal showers in November or December can ruin the crop. Farmers sow the seeds at the beginning of autumn, which results in a spring harvest. Wheat, barley, mustard and green peas are some of the major rabi crops that grow in India.

c) There is a short season between Kharif and Rabi season in the months of March to July. In general, Zaid crops are crops that grow in this season. Also, these grow on irrigated lands. So we do not have to wait for monsoons to grow them. Some examples of Zaid crops are pumpkin, cucumber, bitter groud.

The answer of question 3 is these pictures

Answer 2

Q.1 Explain the different types of Friction:-

Ans => There are four types of Friction:- Statics, Sliding, Rolling, and Fluid friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then Rolling friction, which is wreaking. Fluid friction occurs in fluids, which are liquid and gases.

Q.2 Write in detail about:-

1) Kharif crops => Kharif crops, monsoon crops or Autumn crops are domesticated plants like rice that are cultivated and harvested in India, Pakistan and Bangladesh during the India subcontinent monsoon season, which lasts from June to November depending on the areas.

2) Rabi crops => Rabi crops and harvest are agricultural crops that are sown in winter and harvested in the spring in India and Pakistan. The term is derived from the Arabic word for "spring, which is used in the Indian subcontinent, where it is the spring harvest.

3) Zaid crops => Zaid crops are summer season crops. They grow in long time period mainly from march to June. These crops are mainly grown in the summer season during a period called the "Zaid crops season" They require warm dry weather as major growth period and longer day length for flowering. The time between Kharif crops and rabi.

3 question answer in pic..

I hope this will help you dear..

Always stay safe and stay healthy..