P-ब्लॉक के तत्व | Class 11 NCERT रसायन विज्ञान | 1 PM Class By Shilpa Ma'am | L7 | Hindi Medium

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

Class 11 के बाद क्या ? Class 12 Hindi Medium की पढ़ाई साल के शुरू से कैसे करें ?

NEET 2020 - Revision In 60 Days | NCERT Class 11 Chapter 7 Structural Organisation of Animals Part -1 | NEET Biology

A class starts at 10 a.m. and lasts till 1.27 p.m. Four periods are held during this interval. After every period, 5 minutes are given free to the students. The exact duration of each period is (a) 42 minutes (b) 48 minutes (c) 51 minutes (d) 53 minutes