Middle School M-Step Review

According to the Ohm’s law, if resistance decreases and voltage stays the same then :        

• (a) resistance increases                             

• (b) Current increases         

• (c)  Current remains same                       

• (d) Current decreases

What is the SI unit of the ratio of quantity of charge “Q” and time “t” ?         

•  (a) Volt         

•  (b) Ampere              

•  (c) Ohm               

•  (d) Watt

When state of matter is changed from liquid to gas, we call it        

• (a) melting              

• (b) freezing                

• (c) boiling

• (d) condensing

Tags

NGSS.MS-PS1-4

NaOH + HCl →       

• (a) Na(OH)₂ + H₂          

•  (b) NaCl + H₂          

•  (c) NaCl + H₂O    

• (d) NaCl + H₂ + O₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If NaOH reacts with HCl, reaction can be known as         

• (a) combustion                                    

• (b) Thermal decomposition           

•  (c) Neutralization                             

• (d) Decomposition

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When acid reacts with metal carbonate, products are

• (a) salt                

• (b) water                  

•  (c) carbon dioxide                

• (d) all of above

Capacity of a body to do work is called        

• (a) energy

• (b) work load              

• (c) kinetic energy    

•   (d)  potential energy

Melting point of ice at Fahrenheit is          

• (a) 32 degree

• (b) 100 degree        

• (c) 212 degree        

• (d) 75 degree

Tags

NGSS.MS-PS1-4

When water is electrolyzed, then which gas collected at cathode?         

• (a) sulphur        

• (b) oxygen          

• (c) hydrogen         

•   (d) sulphur dioxide

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Brass is an example of         

• (a) An alloy     

• (b) a compound           

• (c) a mixture         

• (d) an element