Consider the following statements regarding Waste-to-Energy (WtE) plants in India:

1. Incineration-based plants dominate waste-to-energy (WtE) technologies, accounting for 80 per cent of the total waste treated. 
2. Incineration-based WtE plants are used because they produce no harmful emissions.
3. WtE plants can process both biodegradable and non-biodegradable waste.

Which of the statements given above is/are correct?

With reference to algae-based wastewater treatment method, consider the following statements:

1. Unlike other treatment methods where air is pumped from outside for oxidation of ammonia, here algae’s photosynthesis mechanism is used to produce oxygen.
2. Algae-based systems rely on sunlight for energy, reducing external energy input.

Select the correct code.

Consider the following statements regarding United Nations Global Geospatial Information Management (UNGGIM).

1. Led by United Nations Member States, UN-GGIM aims to address global challenges regarding the use of geospatial information.
2. India is a member of UN-GGIM-AP (Asia Pacific region).
3. United Nations Economic and Social Commission for Asia and the Pacific (ESCAP) serves as secretariat for UN-GGIM-AP.

Which of the above statements is/are correct?

‘Surface Hydrokinetic Turbine Technology’ was recently recognized for:

A State action, which has no discriminatory intention, results in disadvantage to a particular group, infringing their rights.

Consider the following statements regarding Mahatma Gandhi National Rural Employment Guarantee Act, 2005.

1. Under the Act, priority be given to women in such a way that at least one-third of the beneficiaries be women.
2. Currently, wage rates are notified based on Consumer Price Index-Agricultural Labourers (CPI-AL) by the State Government.

Which of the above statements is/are correct?

Consider the following countries.

1. Eritrea
2. Yemen
3. Djibouti
4. Somalia

Which of the above countries share/s boundary with Red Sea?

Under Article 25, which test is applied to determine whether a belief constitutes a religion or not for the purpose of protection?

How were celestial spheres used in navigation?