रासायनिक अभिक्रियाएं एवं समीकरण - L25 | Previous Year MCQ | CLASS10 विज्ञान | 8AM Nishtha mam

Class 10 Science (Hindi) | Chapter 1 | रासायनिक अभिक्रियाएँ एवं समीकरण | Important Questions | Quick Revision

Class 10 Science - Most Important Topics | Previous Years Important Questions | CBSE Board 2020

Class 10 Chemistry all Important रासायनिक समीकरण तथा Topic सिर्फ 15 मिनट में

Which two signs and two numbers should be interchanged in the following equation to make it correct? निम्नलिखित समीकरण को सही बनाने के लिए किन दो चिन्हों एवं दो संख्याओं को आपस में बदलने की आवश्यकता है 18 + 25 - 10 xx 10 div 5 = 203

Which two signs and numbers should be interchanged in the following equation to make it correct? निम्नलिखित समीकरण को सही बनाने के लिए कौन से दो चिन्हों एवं दो संख्याओं को आपस में बदलना होगा? 10 + 8 - 200 xx15 div 5 = 407

Two stations A and. B are 110 km apart on a straight line. One train starts from A at 7 a.m. and travels towards B at 20 kmph. Another train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph. At what time will they meet? 9 adotmdot b. 10 adotmdot c. 10. 30 adotmdot d. 11 adotmdot

In a class of 10 students the average age was 16 years. When two students left the class, the average age of the remaining students became 16.25 years. What is the total age of the students left