Answer: B) 1839 Explanation: The First Anglo-Afghan War also known as Disaster in Afghanistan was fought between British imperial India and The Emirate of Afghanistan from 1839 to 1842. A British-Indian force attacks Ghazni fort during the First Afghan War, 1839.

Answer: D) Mukesh Father Explanation: That man's son means Mukesh => Mukesh father's son is Mukesh => It is Mukesh's father.

Gum.

Answer: B) Nirmala Sitharaman Explanation: Nirmala Sitharaman, who took oath as the new Cabinet member in september 2017 under Narendra Modi, has been given the Defence Ministry portfolio. Incidentally, she has become the first dedicated woman defence minister of India and only the second woman to hold the crucial ministry after Indira Gandhi.

Answer: D) Nagpur Explanation: With India's pledge to go all electric by 2030, Nagpur will be the first city in the country to adopt electric cabs as the country moves a step closer to its goal. The pilot project will see around 200 e-cabs in Nagpur with the local body to provide for the charging stations across the city. Currently, Mahindra and Honda are few of the car-manufacturers who have electric and hybrid vehicles in their line-up. We do hope that the situation changes, as hybrid and electric vehicles will help in the growing pollution in India. Countries such as France, Netherland and Belgium have already started to adopt electric and hybrid vehicles.

Answer: C) Arunachal Pradesh Explanation: The Dibang Wildlife Sanctuary is one of the eight wildlife sanctuaries of Arunachal Pradesh, India.

Answer: D) Madhya Pradesh Explanation: Madhya Pradesh has the highest number of 55770 fully covered tribal habitations with the safe drinking water in the country followed by Odisha and Jharkhand.

Answer: C) Sound waves Explanation: Light and Radio waves are both different frequency/wavelengths of electromagnetic radiation, which consists of two components electric and magnetic of perpendicular, transverse waves.    Sound, on the other hand, is a longitudinal wave which oscillates parallel to it's medium (back and forth instead of up and down).