Haryana BSEH Secondary Science case studies
Haryana BSEH Secondary Science · Put your knowledge to work in context.
The Haryana Board of School Education (BSEH), usually called HBSE, conducts the Secondary examination that ends Class 10 for students in Haryana's affiliated schools. The Science paper is a single subject examination combining physics, chemistry, biology and environmental science, and it is a qualifying subject for promotion to Class 11 as well as for many state-level certificate and diploma admissions. The Haryana BSEH Secondary Science case studies are 5 cases and about 2,869 words.
1White Powder in the Kitchen: Baking Soda or Washing Soda?
Two students are given a 10.0 g sample of a white kitchen powder that is known to contain sodium hydrogencarbonate and sodium chloride only. They place it in a dry test tube and heat it gently over a spirit lamp.
609 words, about 3 min2Elodea, Bromothymol Blue and the Light–Dark Balance
Three transparent test tubes are filled with equal volumes of dilute bromothymol blue solution. Tube A is sealed with a sprig of the water plant Elodea and kept in bright light.
562 words, about 3 min3A Convex Lens, a Covered Aperture and a Missing Screen Image
A student sets up a convex lens on an optical bench. A candle flame is placed 30.0 cm from the lens, and a sharp image is obtained on a screen placed 60.0 cm on the other side.
547 words, about 3 min4A 5 A Fuse and Four Appliances in One Room
A household in a Haryana town is connected to a 220 V supply through a 5 A fuse. At one time the following appliances are switched on: a 1000 W electric iron, a 60 W bulb, an 80 W fan, and a 150 W television.
572 words, about 3 min5Tiredness, Tea With Meals and a Low Haemoglobin Report
A 14-year-old girl in a government school reports tiredness, breathlessness while climbing stairs, and difficulty concentrating in class. Her diet for the past six months has been mostly wheat roti, rice, potato, and tea; she eats pulses about once a week and green leafy vegetables rarely.
579 words, about 3 min