1. Which of the following is/are tributaries of Godavari?
1. Pravara
2. Indravati
3. Vamsadhara
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
Explanation: Option (a) is correct
The river Godavari rises at an elevation of 1,067 m in the Western Ghats near Thriambak Hills in the Nasik district of Maharashrta. The river Godavari, the largest of the peninsular rivers, and third largest in India, drains about 10% of India's total geographical area.
Following are tributaries of Godavari:
Left tributary: Banganga, Kadva, Shivana, Purna, Kadam, Pranahita, Indravati, Taliperu, Sabari
Right tributary: Nasardi, Pravara, Sindphana, Manjira, Manair, Kinnerasani
Vamsadhara is an independent river and not tributary of Godavari river.
Source: https://www.thehindu.com/news/national/andhra-pradesh/godavari-level-rising-many-canals-streams-in-spate-in-w-godavari/article36726593.ece
http://cwc.gov.in/sites/default/files/admin/About-Godavari-Basin-kgbo.pdf
https://indiawris.gov.in/wiki/doku.php?id=east_flowing_rivers_between_mahanadi_and_pennar

2. “The World Happiness Report” is released by
(a) World Economic Forum
(b) World Bank
(c) Sustainable Development Solutions Network
(d) Transparency International
Explanation: Option (c) is correct
The World Happiness Report is annual publication of the Sustainable Development Solutions Network. The first World Happiness Report was released on April 1, 2012 as a foundational text for the UN High Level Meeting: Well-being and Happiness: Defining a New Economic Paradigm. Since 2016, it has been issued on an annual basis on the 20th of March, to coincide with the UN's International Day of Happiness.
 Source: https://www.thehindu.com/opinion/op-ed/the-pursuit-of-happiness-through-justice/article36724456.ece
https://worldhappiness.report/

3. Consider following statements about, the Asian Development Bank (ADB):
1. ADB headquarter is located at Shanghai, China
2. China holds the largest proportion of shares of ADB
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
Explanation: Option (d) is correct
ADB was conceived in the early 1960s as a financial institution that would be Asian in character and foster economic growth and cooperation in one of the poorest regions in the world.
A resolution passed at the first Ministerial Conference on Asian Economic Cooperation held by the United Nations Economic Commission for Asia and the Far East in 1963.  
The bank admits the members of the United Nations Economic and Social Commission for Asia and the Pacific (UNESCAP).
Statement 1 is incorrect:
ADB headquarter is located at Manila, Philippines
Statement 2 is incorrect:
Japan and the United States, holds the largest proportion of shares of ADB
Source: https://www.thehindu.com/business/Industry/narcl-would-work-better-with-bank-recapitalisation-adb/article36721977.ece
https://www.adb.org/who-we-are/main

4. Which of the following are used in traditional firecrackers?
1. Potassium nitrate
2. Barium nitrate
3. Mercury (II) fulminate
4. Aluminium powder
Select the correct answer using the code given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2, 3 and 4
Explanation: Option (d) is correct
There are several chemicals used in traditional firecrackers. Firecrackers are essentially made up of four components: Oxidisers, fuel, colouring agents and binder, according to a report filed before the Supreme Court by the Central Pollution Control Board (CPCB) on the "Known Health Impacts From Bursting Firecrackers Caused Due To Their Chemical Composition".
The oxidiser is usually a perchlorate salt.
The fuel in the firecracker is generally charcoal which sustains the fire. Burning this results in the release of a large amount of air pollutants, particularly sulphur dioxide, carbon dioxide, carbon monoxide (CO) and particulate matter into the atmosphere.
According to the CPCB report, these are the chemical compounds which give firecrackers their colours. Aluminium compounds produce brilliant whites, barium nitrate produces greens, and the addition of copper results in blue light. Each of these come with their health effects.
Several other Heavy metals are used in firecrackers for several purpose like Mercury, Arsenic, Lead etc.
Traditional firecrackers use all of the above-mentioned chemicals which has several bad effects on Environment.
Source: https://www.thehindu.com/news/national/supreme-court-lashes-out-at-firecracker-manufacturers/article36715280.ece
https://www.thehindu.com/news/national/after-sc-order-focus-on-chemicals-in-firecrackers/article19440256.ece
5.What is the correct sequence of occurrence of the following cities/towns as one proceeds from West to East along proposed Zojila Tunnel project?
1. Kargil
2. Dras
3. Srinagar
4. Leh
Select the correct answer using the code given below.
(a) 1-2-3-4
(b) 3-2-1-4
(c) 3-1-2-4
(d) 1-3-2-4
Explanation: Option (b) is correct
In Zojila tunnel project, the 14.15km long tunnel will be built at an altitude of about 3000 m under Zojila pass (presently motorable only for 6 months in a year) on NH-1 connecting Srinagar and Leh through Dras & Kargil. The stretch is one of the most dangerous in the world to drive and also geo-strategically sensitive.
Source: https://www.thehindu.com/news/national/other-states/nitin-gadkari-reviews-zojila-tunnel-work/article36717076.ece
https://pib.gov.in/PressReleasePage.aspx?PRID=1664707