4066: The currency of the proposed European Monetary Union will be
(a) Dollar
(b) Euro
(c) Guilder
(d) Mark
4067: With reference to 'Li-Fi', recently in the news, which of the following statements is/are correct?
1. It uses light as the medium for high-speed data transmission.
2. It is a wireless technology and is several times faster than 'WiFi'.
Select the correct answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
4068: Doctrine of Lapse was adopted as a measure to annex Indian states by:
(a) Lord Cornwallis
(b) Lord Clive
(c) Lord Dalhousie
(d) Lord Wellesley
4069: With reference to Indian defence, which one of the following statements is not correct?
(a) With the induction of Prithvi II, the IAF is the only airforce in the world with surface-to-surface ballistic missiles under its command
(b) Sukhoi-30 MKI jet fighters can launch air-to-air and air-to-surface precision missiles
(c) Trishul is a supersonic surface to-air missile-vith a range of 30 km
(d) The indigenously built INS Prabal can launch surface-to-surface missiles
4070: Emperor Harsha's southward march was stopped on the Narmada river by
(a) Pulakesin-I
(b) Pulakesin-II
(c) Vikramaditya-I
(d) Vikramaditya-II