Picat Verification Test Practice Exam, Exams of Chemistry

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Questions And Answers

In making permanent electronic connections, use? - - correct answer ✅soldering iron When current flow is interrupted by a blown fuse, the circuits becomes? - - correct answer ✅Open A standard multimeter does not measure? - - correct answer ✅frequency Electric current flowing from one component to the next is an example of what kind of circuit? - - correct answer ✅Series In order to make an electric current flow, it is necessary to have? - - correct answer ✅Copper conductors A device that converts sound waves to electric current is a? - - correct answer ✅Transformer Which of the following can not be used to store an electrical charge? - - correct answer ✅fuse

Questions And Answers

Wires are joined together with solder to ensure? - - correct answer ✅Minimum resistance Which of the following is the smallest in size and can amplify electrical signals? - - correct answer ✅Relay The type of electricity used to power a car radio is typically? - - correct answer ✅DC. An electric generator has all of the following except? - - correct answer ✅Carburetor What kind of energy is converted to electrical energy by a car battery? - - correct answer ✅chemical The most commonly used fuel for running automobile engine is? - - correct answer ✅Gasoline Which of the following is not part of a cars drive train? - - correct answer ✅transmission

Questions And Answers

Which engine component stores oil for lubrication? - - correct answer ✅oil pan The Catalytic converter is part of what system? - - correct answer ✅Emission control system How many crankshafts are there in a V-8 automobile engine? - - correct answer ✅ 8 The engine flywheel bolts to the? - - correct answer ✅crankshaft Pistons are usually made from what material? - - correct answer ✅Aluminum MacPherson struts are a type of? - - correct answer ✅suspension Brake shoes stop a car by exerting pressure on the? - - correct answer ✅Tires Which of the following uses a penny system to specify its size? - - correct answer ✅finishing nail

Questions And Answers

Taps and dies are tools to? - - correct answer ✅Cut threads for nuts and bolts Which tool is used to bend large sections of sheet metal? - - correct answer ✅Lathe What is placed around a chimney to prevent leaks? - - correct answer ✅flashing This type of pattern on metal is made by process called? - - correct answer ✅Knurling Self-taping screws are primarily used when fastening objects to? - - correct answer ✅Sheet metal To properly turn wood stock, one should use a? - - correct answer ✅lathe The technique for joining copper water pipes is called? - - correct answer ✅Soldering

Questions And Answers

Which of these does not make wood chips when it is used? - - correct answer ✅drill press Which adhesive is usually supplied in two parts which must be mixed prior to use? - - correct answer ✅Contact Concrete As piston P moves up in the direction shown, lever Q? - - correct answer ✅Does not move Four weights are tied together and hung from the ceiling. What will be the tensions in the cord at the point labeled? - - correct answer ✅60 pounds What would you tell the person who is trying to loosen the rusty nut with the wrench? - - correct answer ✅Move your hand farther from the nut A car stops suddenly. Why are the passengers thrown forward against their seat belts? - - correct answer ✅Terminal velocity Why are hoops closer together near the bottom of the tank? - - correct answer ✅Water pressure pushing against the sides of the tank is greater near the bottom

Questions And Answers

It is true that frictional forces? - - correct answer ✅Always oppose forces producing motion Crewtrifrugal Force is the? - - correct answer ✅Outward force caused by rotation In this pulley system, what force must be applied to balance the 10 pound weight - - correct answer ✅10 lbs The joint at B contains a pin so that the ball can move up and down. If the axle BC rotated faster, angle X will? - - correct answer ✅Decrease The surface.... if piston A is pushed down 6 inches, how far will piston B move up? - - correct answer ✅3 inches The spring pulls the left end of the lever against the cam. As the cam makes four rotations, how many times will the right end of the lever move up and down? - - correct answer ✅ 4

Questions And Answers

Which of the following objects has the most structural strength? - - correct answer ✅A A definition of a vacuum is? - - correct answer ✅The absence of matter If 60 pounds of the force must be applied to the valve for it to open, how much upward force must push rod X ,apply for the valve to open? - - correct answer ✅40 lbs At what altitude is atmospheric pressure the greatest? - - correct answer ✅Sea level Fiction is the force that? - - correct answer ✅Opposes motion between 2 surfaces Which of the following is a renewable resource? - - correct answer ✅peanut oil Which of the following reproduce by spawning? - - correct answer ✅fish

Questions And Answers

What do a hydrogen and oxygen molecule have in common? - - correct answer ✅Their size The filament in an electric lightbulb is made of? - - correct answer ✅Tungsten When scientists measure a liquids resistance to flow they are measuring? - - correct answer ✅Viscosity An aquifer is? - - correct answer ✅River bottom made up of sedimentary rocks Human skin cells divide by? - - correct answer ✅Mitosis Perpetual motion machines can never be built because it is not possible to eliminate? - - correct answer ✅Inertia Which reduces friction? - - correct answer ✅Ball bearing Regeneration in men is limited to? - - correct answer ✅Healing of wounds

Questions And Answers

If you place bean seeds between moist towels and watch the stern leaves appear, you will see a demonstration of? - - correct answer ✅Germination The tympanic membranes are also known as? - - correct answer ✅ear drums Choking is prevented by the? - - correct answer ✅epiglottis covering the voice box Which of the following actions produce a chemical change? - - correct answer ✅adding salt to the hot water Which do the following enables the pen to work? - - correct answer ✅Hydraulic force The term "meiosis" is usually associated with? - - correct answer ✅Reproduction What do a hydrogen molecule and an oxygen molecule have In common? - - correct answer ✅Size, charge on each electron

Questions And Answers

Which of the following is a non-renewable resource? - - correct answer ✅Copper What are the two main gases the make up stars? - - correct answer ✅Hydrogen and helium In chemistry, to be classified as an organic substance, a substance must contain? - - correct answer ✅carbon atoms Any astronomical body that revolves around a large body is called? -

• correct answer ✅Satellite When a lobster grows a claw to replace one that was lost, this process is called? - - correct answer ✅regeneration How a smooth rock became smooth? - - correct answer ✅It was in a stream for along time Which element does not contain any neutrons? - - correct answer ✅Hydrogen

Questions And Answers

Chemical formula of a compound describes the Elements the compound contains and the? - - correct answer ✅the ratio of elements in a compound What is the symbol for the Hydroxyl ion? - - correct answer ✅OH- eradicate - - correct answer ✅to get rid of savory - - correct answer ✅Tasty impair - - correct answer ✅Weaken Ravage - - correct answer ✅Devastate evasive - - correct answer ✅Foolish enduring - - correct answer ✅Perpetual maim - - correct answer ✅Injure Cease - - correct answer ✅Stop

Questions And Answers

Inhabit - - correct answer ✅to live in chide - - correct answer ✅Scold wary - - correct answer ✅careful, cautious turmoil - - correct answer ✅Commotion Obliterate - - correct answer ✅Wipe out Unison - - correct answer ✅Agreement rudiments - - correct answer ✅Basic methods and procedures vague - - correct answer ✅unclear, indistinct Cajole - - correct answer ✅To Coak, wheedle nepotism - - correct answer ✅hiring relatives

Questions And Answers

contentious - - correct answer ✅quarrelsome unpretentious - - correct answer ✅Complicated communique - - correct answer ✅Message embody - - correct answer ✅Cloak contrue - - correct answer ✅to interpret perilous - - correct answer ✅dangerous, hazardous inept - - correct answer ✅unskilled; clumsy, bungling Adage - - correct answer ✅a proverb, wise saying admonition - - correct answer ✅warning decry - - correct answer ✅disparage

Questions And Answers

Moratorium - - correct answer ✅Suspension emphasize - - correct answer ✅to accentuate