Questions

Heat transfer through radiation takes place in form of electromagnetic waves mainly in the infrared region. It depends on nature of the body, its temperature and kind & extent of its surface.

Carbohydrates, together with lipids, proteins and nucleic acids, are one of the four major classes of biologically essential organic molecules found in all living organisms. They not only provide energy for vital metabolic reactions but also supply the building materials for normal structure, growth and repair. Your body needs relatively large quantities of carbohydrates, fats and protein for optimal function, hence their classification as macronutrients.

India's first passenger train run took place from Mumbai to Thane for around 34 kms on 16th April in the year 1853. 

That train was hauled by three steam locomotives : Sahib, Sindh and Sultan.

That train had 14 carriages, carrying around 400 passengers.

Answers B and C belong to quality management, and answer D was formulated by Elizabeth Duffy and suggested that we all try to adjust our lives so that we have a dynamic balance (homeostasis) between challenge and relaxation. Kerstner, Chapter 18