NCERT 2022 | रेशो से वस्त्र तक - L7| From fiber to fabric | CLASS7 विज्ञान | 8PM Class by Amba Ma'am

In the following questions, each question has four options (A), (B), (C) and (D). Choose the correct option and indicate your correct response. A train started from Patna to Mumbai at 8 : 25 A.M. and reached Mumbai at 7 : 35 P.M. same day. The time taken by train in journery is :

Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer 1) if the data in statement I alone are sufficient to answer the question while the data in statement II alone are not sufficient to answer the question. 2) if the data in statement II alone are sufficient to answer the question while the data in statement I alone are not sufficient to answer the question. 3) if the data either in statement I alone or in statement II alone are sufficient to answer the question. 4) if the data even in both statements I and II together are not sufficient to answer the question. 5) if the data in both statements I and II together are necessary to answer the question. What is Kumud’s rank in a class of 40? I. Seema, who is 8th from the top in the class, is above Kailash by 18 ranks, who is below Kumud by 7 ranks. II. Nandini, who is between Kumud and Kishori, is 20th from the bottom.

A person from A starts to walk at 7 am and reaches B at 1 pm and another person starts to walk from B at 8 am and reaches A at 11 am. Find the time at which they meet each other.

X is 7th from the top while Y is 16th from the bottom in the class ranking. If they interchange their positions, then X becomes 21st from the top. What will be the position of Y from the bottom? X शीर्ष से 7 वें स्थान पर है जबकि Y कक्षा रैंकिंग में नीचे से 16 वें स्थान पर है। यदि वे अपनी स्थिति को बदलते हैं, तो X शीर्ष से 21 वें स्थान पर आ जाता है। नीचे से Y की स्थिति क्या होगी?

The distance (in km) of 40 engineers from their residence to their place of work were found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 12 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation?

The bar graph below shows the percentage break-up of the number of student who visited various touris spots on new Year evening. The table shows the total numbers of students om classes X,XI and XII . {:("Class","No. of students"),(X,420),(XI,480),(XII,400):} If the ratio of girls and boys, who went to Manali from class X, was 7:8 , then what percent of the total number of students from class X who went to a turist spot is the number of girls who went to Manali ? (approximate)

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows: 2.6 3.0 3.7 3.2 2.2 4.1 3.5 4.5 3.5 2.3 3.2 3.4 3.8 3.2 4.6 3.7 2.5 4.4 3.4 3.3 2.9 3.0 4.3 2.8 3.5 3.2 3.9 3.2 3.2 3.1 3.7 3.4 4.6 3.8 3.2 2.6 3.5 4.2 2.9 3.6 Construct a grouped frequency distribution table for this data, using class intervals of size 0.5 starting from the interval 2 - 2.5.

The two given expressions on both sides of the ‘=’ sign will have the same value if two numbers from either side or both sides are interchanged .Select the correct numbers to be interchanged from the given options. ‘=’ के दोनों तरफ दिए गए समीकरणों का मान समान होगा यदि किसी भी तरफ या दोनों तरफ की दो संख्याओं को आपस में बदल दिया जाए | दिए गए विकल्पों में से सही संख्याओं का चयन कीजिए जिन्हें आपस में बदला जा सकता है | 4 + 6 xx 7 - 27 div 3 = 7 xx 8 - 4 + 39 div 3

Out of 100 students who appeared for the SSC examination from a school 15 students in English ; 12 students in Mathematics; 8 students in Sience 7 studens in Mathematics and Science; 4 students in English and Science 6 students in English and Mathematics; 4 students in all the three subjects could get First calss marks. How many of them have got First class marks.(ii) only in Science (i) only in Mathmatics