Chemistry - Study Mode

[#786] If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by
Correct Answer

(B) Lead

Explanation

Solution: If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by lead.

[#787] Extensively used nitrogenous fertilizer is
Correct Answer

(B) Urea

Explanation

Solution: More than 90% of world production of urea is destined for use as a nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use. Therefore, it has the lowest transportation costs per unit of nitrogen nutrient.

[#788] Which one of the following group of gases contributes to the 'Green House Effect'?
Correct Answer

(A) Carbon dioxide and Methane

Explanation

Solution: Carbon dioxide and Methane contributes to the 'Green House Effect'.

[#789] Black lung disease occurs in people working in
Correct Answer

(D) Coal mines

Explanation

Solution: Coal workers' pneumoconiosis (CWP), commonly known as "black lung disease," occurs when coal dust is inhaled.

[#790] The least preferred technique in the disposal of Municipal Solid Waste is
Correct Answer

(D) Bricketting

Explanation

Solution: Some of the methods of solid waste disposal and management are : ➤ Open burning ➤ Dumping into the sea ➤ Sanitary Landfills ➤ Incineration ➤ Composting ➤ Ploughing in fields ➤ Hog feeding ➤ Grinding and discharging into sewers ➤ Salvaging ➤ Fermentation and biological digestion Bricketting that involves the solidification of preprocessed municipal solid waste into fuel pellets or briquettes is the least preferred method of solid waste disposal.