QUES: The essence of air defence is to detect hostile aircraft and destroy them. The critical issue is to hit a target moving in three-dimensional space; an attack must not only match these three coordinates, but must do so at the time the target is at that position. This means that projectiles either have to be guided to hit the target, or aimed at the predicted position of the target at the time the projectile reaches it, taking into account speed and direction of both the target and the projectile.
What is the critical issue in air defence?

ANS: to hit a target moving in three-dimensional space

QUES: The small woolen dolls called Maniae, hung on the Compitalia shrines, were thought a symbolic replacement for child-sacrifice to Mania, as Mother of the Lares. The Junii took credit for its abolition by their ancestor L. Junius Brutus, traditionally Rome's Republican founder and first consul. Political or military executions were sometimes conducted in such a way that they evoked human sacrifice, whether deliberately or in the perception of witnesses; Marcus Marius Gratidianus was a gruesome example.
What leader was the first consul of the Roman Republic?

ANS: L. Junius Brutus

QUES: On March 22, 2012, the Somali Cabinet unanimously approved the National Communications Act, which paves the way for the establishment of a National Communications regulator in the broadcasting and telecommunications sectors. The bill was passed following consultations between government representatives and communications, academic and civil society stakeholders. According to the Ministry of Information, Posts and Telecommunication, the Act is expected to create an environment conducive to investment and the certainty it provides will encourage further infrastructural development, resulting in more efficient service delivery.
What types of stakeholders consulted on the bill to enact the National Communications Act?

ANS: academic and civil society

QUES: The 19th century also saw the use of red in art to create specific emotions, not just to imitate nature. It saw the systematic study of color theory, and particularly the study of how complementary colors such as red and green reinforced each other when they were placed next to each other. These studies were avidly followed by artists such as Vincent van Gogh. Describing his painting, The Night Cafe, to his brother Theo in 1888, Van Gogh wrote: "I sought to express with red and green the terrible human passions. The hall is blood red and pale yellow, with a green billiard table in the center, and four lamps of lemon yellow, with rays of orange and green. Everywhere it is a battle and antithesis of the most different reds and greens."
What was the name of vincent van Gogh's brother?

ANS:
Theo