MCQ General Science Chapter 6 Class 7 Maharashtra BoardMCQ For All Chapters – General Science Class 7Measurement of Physical Quantities 1. What is the international system of units called?MKSCGSSI (System International)ImperialQuestion 1 of 202. What is the SI unit for length?KilogramMetreSecondGramQuestion 2 of 203. What material is the standard kilogram made of?GoldPlatinum-iridium alloySteelAluminumQuestion 3 of 204. Where is the standard metre defined?On a rulerBetween two lines on a platinum-iridium barBy a hand-spanBy a clockQuestion 4 of 205. How is one second standardized?By Earth’s rotation divided into 24 hoursBy a hand movementBy a pendulum swingBy light travelQuestion 5 of 206. What was the ‘cubit’ in ancient Egypt?A standard metreDistance from elbow to middle finger tipA kilogramA secondQuestion 6 of 207. Why was the King’s cubit considered standard?It was the smallestIt was consistent for one personIt was internationally agreedIt was the longestQuestion 7 of 208. What device was used in olden times to measure time?Atomic clockHour glassSundialPendulumQuestion 8 of 209. Why must measurement accuracy depend on purpose?All measurements are the sameDifferent purposes need different precisionDevices are unreliableUnits change constantlyQuestion 9 of 2010. What is a major cause of errors in measurement?Using the appropriate deviceNot using the device properlyStandardizing unitsChecking balancesQuestion 10 of 2011. What is standardization in measurement?Changing unitsChecking against a standard measureUsing body partsIgnoring errorsQuestion 11 of 2012. What should you check on a balance at a shop?Its colorIf it carries a standardization stampIts weightIts heightQuestion 12 of 2013. What government division oversees weights and measures?Food Safety AuthorityWeights and Measures sub-divisionHealth DepartmentEducation BoardQuestion 13 of 2014. What does TMC stand for in water measurement?Ten Million Cubic feetOne Thousand Million Cubic feetTotal Mass CapacityTime Measured ConstantQuestion 14 of 2015. How many litres are in 1 cubic foot?28.317283.172.83172831.7Question 15 of 2016. What is the SI unit symbol for time?mkgscmQuestion 16 of 2017. Where are the standards of fundamental units kept in India?MumbaiNational Physical Laboratory, New DelhiParisMaharashtraQuestion 17 of 2018. Why is it not proper to use body parts as units?They are too accurateThey vary between individualsThey are standardizedThey are constantQuestion 18 of 2019. What is the unit of density in the MKS system?Kilogram/cubic metreMetre/secondSquare metreLitreQuestion 19 of 2020. Why is it necessary to standardize weights and measures regularly?To change their valuesTo ensure they remain accurate and fairTo make them heavierTo reduce their useQuestion 20 of 20 Loading...
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