What volume of 0.5mldm3 H2SO4 will exactly neutralize 20cm3 of 0.1moldm3 NaOH Solution?
2.0cm3
5.0cm3
6.8cm3
8.3cm3
Correct answer is A
2NaOH + H2SO4 → Na2SO4 + 2H2O
CaVa) ÷ (CbVb) = ratio of acid / ratio of base
0.5Va ÷ (0.1 × 20) = ½
Va = 2.0cm3
Which of the following is a common by-product of farm animals?
All of the above
Wool
Fertilizer
Milk
Correct answer is A
Farm animals often produce various valuable by-products. Milk is a common by-product of dairy animals such as cows, goats, and sheep. It is a significant source of nutrition for humans and is used to produce dairy products such as cheese, butter, and yogurt. Fertilizer is another by-product that can be obtained from farm animals, specifically from their manure.
What is the purpose of using a scale of preference in agricultural decision-making?
To evaluate the environmental impact of farming practices
To determine the most profitable crops to cultivate
To allocate resources effectively among different activities
To prioritize agricultural tasks based on urgency
Correct answer is C
The purpose of using a scale of preference in agricultural decision-making is to allocate resources effectively among different activities. A scale of preference is a tool used to prioritize and rank various options or choices based on their relative importance or value. In agriculture, farmers often face limited resources such as land, labor, capital, and time.
What is the primary purpose of storage facilities in agriculture?
Offering a workspace for farm labourers
Storing and preserving harvested crops
Providing shelter for farm animals
Housing agricultural machinery and equipment
Correct answer is B
The primary purpose of storage facilities in agriculture is to store and preserve harvested crops. These facilities, such as warehouses, silos, or cold storage units, are designed to protect harvested crops from environmental factors, pests, and diseases. They provide a controlled environment that helps maintain the quality, nutritional value, and market value of the stored crops.
What is the primary objective of agricultural research?
Developing new farming technologies
Increasing crop diversity
Promoting organic farming practices
Enhancing agricultural productivity and sustainability
Correct answer is D
The primary objective of agricultural research is to enhance agricultural productivity and sustainability. Agricultural researchers work to develop innovative techniques, technologies, and practices that improve crop yields, reduce environmental impact, and ensure the long-term viability of agricultural systems.