Daily MCQ Practice 06 April 2022

 Q. With reference to the Indus river system, of the following four rivers, three of them pour into one of them which joins the Indus directly. Among the following, which one is such a river that joins the Indus direct?

(a) Chenab

(b) Jhelum

(c) Ravi

(d) Sutlej

Ans: (d)

The Jhelum joins the Chenab near Jhang in Pakistan.

The Ravi joins the Chenab near Sarai Sidhu.

Satluj is joined by the Chenab in Pakistan. Thus, Satluj receives the collective drainage of the Ravi, Chenab and Jhelum rivers. It joins the Indus a few kilometres above Mithankot.

Q. Consider the following pairs: (2014)

      Wetlands            Confluence of rivers

Harike Wetlands : Confluence of Beas and Satluj/Sutlej

Keoladeo Ghana : Confluence of Banas National Park and Chambal

Kolleru Lake :       Confluence of Musi and Krishna

Which of the above pairs is/are correctly matched?

(a) 1 only

(b) 2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3

Ans: (a)

Harike is one of the largest man-made wetlands of Northern India. It came into existence in 1952 after the construction of barrage near the confluence of rivers Satluj and Beas.

It was accorded the wetland status in 1990 under the Ramsar Convention.

Keoladeo National Park is situated at the confluence of the Gambhir and Banganga rivers in the Bharatpur district of Rajasthan.

Kolleru Lake is located between Krishna and Godavari deltas. Kolleru spreads into two districts – Krishna and West Godavari.

Q. Consider the following statements: (2017)

1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue.
2. Sexual transmission of Zika virus disease is possible.

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

Ans: (c)

• Zika virus is a flavivirus which was first discovered in 1947 in monkeys and then in humans in Uganda in 1952.
• Both Zika and Dengue have similarities in terms of symptoms of fever, skin rashes, conjunctivitis, muscle and joint pain, malaise, and headache. In addition to this, the mode of transmission is also same for both the diseases, i.e., both are spread by Aedes aegypti and Aedes albopictus species of mosquitoes.
• Modes of Zika Transmission:

1. Mosquito bites
2.  From mother to child during pregnancy, which can cause microcephaly and other severe fetal brain defects. Zika virus has also been found in breast milk.
3.  Sexual transmission from infected partner.

Q. H1N1 virus is sometimes mentioned in the news with reference to which one of the following diseases? (2015)

(a) AIDS

(b) Bird flu

(c) Dengue

(d) Swine flu

Ans: (d)

• H1N1 virus is related to Swine Flu.
• The World Health Organization declared the flu caused by H1N1 to be a global pandemic in 2009.
• Symptoms of Swine Flu include fever, cough, sore throat, chills, weakness and body aches.

Q. Bisphenol A (BPA), a cause of concern, is a structural/ key component in the manufacture of which of the following kinds of plastics?

(a) Low-density polyethylene

(b) Polycarbonate

(c) Polyethylene terephthalate

(d) Polyvinyl chloride

Ans: (b)

• Bisphenol A (BPA) is a chemical produced in large quantities, primarily for the use in the production of polycarbonate plastics and epoxy resins.

Q.Why is there a great concern about the ‘microbeads’ that are released into environment? (2019)

(a) They are considered harmful to marine ecosystems.
(b) They are considered to cause skin cancer in children.
(c) They are small enough to be absorbed by crop plants in irrigated fields.
(d) They are often found to be used as food adulterants.

Ans: (a)