Daily Quiz: UPSC Prelims Marathon – February 7, 2019

All are used in adulteration of milk.

“Adulterant” means any material which is or could be employed for making the food unsafe or sub-standard or misbranded or containing extraneous matter.

Adulterated food is dangerous because it may be toxic and can affect health and it could deprive nutrients essential for proper growth and development.

All the statements are incorrect.

A botnet is an interconnected network of computers infected with malware without the user’s knowledge and controlled by cybercriminals. They’re typically used to send spam emails, transmit viruses and engage in other acts of cybercrime. Sometimes known as a zombie army, botnets are often considered one of the biggest online threats today.

Malware, also known as “malicious software,” can be classified several ways in order to distinguish the unique types of malware from each other. Distinguishing and classifying different types of malware from each other is important to better understanding how they can infect computers and devices, the threat level they pose and how to protect against them.

A computer infected with a malware can be used in a Botnet.

Statement 1 is incorrect. Neutrinos have zero electric charge.

Statement 2 is correct. Neutrinos are subatomic particles produced by the decay of radioactive elements

Macronutrients constitute Nitrogen (N), Phosphorous (P), Potassium (K), Calcium (Ca), Sulfur (S), Magnesium (Mg).

BT Cotton Gene CRY1ac has been taken from soil bacterium Bacillus Thuringiensis, which has been inserted into cotton. This gene has been identified to produce a toxin that is potent to many pests. Once this gene is inserted into cotton plants, then we get a cotton plant that fights pests on its own. This reduces the use of Pesticides.

In India, BT Cotton was used on a wide scale from 2002. Over a decade now, the positives and negatives are properly documented.

Negatives

• Bollworm pests that the BT toxin is designed to fight, is becoming BT resistant. This is a major issue, since this scenario was not anticipated and there is virtually no solution as of now to this issue.
• BT toxin is destroying microflora.
• BT plants are not able to produce BT toxin throughout their lifespan

Hyperelastic Bone or HB is a breakthrough in reconstructive surgery. It is a new synthetic material that can be implanted under the skin as a scaffold for new bone to grow on, or used to replace lost bone matter altogether.

The hyperelastic bone, is  made from a naturally occurring mineral called hydroxyapatite. Hydroxyapatite — a form of calcium found in bone and already used in reconstructive surgeries — is extremely brittle, but the researchers mixed it with a polymer to add flexibility. They then 3D print bone graft from this new, promising material and tested it in various experiments.

India is collaborating with Russia to build Rooppur nuclear power plant in Bangladesh. It will be first initiative under an India-Russia nuclear deal to undertake atomic energy projects in third countries. It will also be India’s first atomic energy venture abroad. Rooppur Nuclear project (capacity of 2*1200 MWs) is Bangladesh’s first atomic energy project. It is being built with Russia’s help near Dhaka. After commissioning of two units each with capacity of 1200 MWs, Bangladesh will be third South Asian country after India and Pakistan to harness atomic energy for energy purpose.