Multiple choice Which one of the following statements is correct? The mountains of the Peninsular India are about 40 million years old The Eastern Ghats extend as a continuous range for a distance of about 1600 km The Western Ghats consist of a series of discontinuous hills with no structural continuity The Siwalik Ranges have hogback appearance Reveal answer Fill a bubble to check yourself D Correct answer Explanation The Siwalik comprises range of the Himalaya and is also known as Outer Himalayas. With its southern steep slopes, it assumes hogback appearance. Flat scarps, anticlinal crests and synclinal valleys are the chief characteristic feature of this range.