Can you turn off a grenade?
It can not be deactivated once the fuse starts. About the only thing you can do is to shatter the grenade with a very high powered rifle or other means so that the fuse separates from the explosives.
It depends on the grenade. With American grenades using a pull-ring style fuse, so long as the safety lever or “spoon” is still in place the pin or reasonable facsimile can be reinserted to prevent detonation.
Here's what happens inside once the grenade is released: With the pin removed, there is nothing holding the lever in position, which means there is nothing holding the spring-loaded striker up. The spring throws the striker down against the percussion cap. The impact ignites the cap, creating a small spark.
Such an act can be survivable: in World War II, U.S. Marine Jack Lucas, in the Battle of Iwo Jima, placed two grenades under his steel M1 helmet and himself before they exploded. Lucas lived, but spent the rest of his life with over 200 pieces of shrapnel in his body.
How Long Does It Take A Grenade To Explode? From pulling the pin and throwing a grenade, it usually takes anywhere between two to six seconds before detonation occurs.
FRAG OUT! The grenade is a fragmentation grenade, because when it blows up it throws fragments through the air, hence the term “FRAG OUT.” This phrase is yelled loud for all others in the unit to hear. Once you throw the grenade, hit the deck.
Most grenades will detonate about 3-5 seconds after the trigger is released, giving you a few critical moments to react. The kill radius from a grenade's explosion is about 15 feet, and the casualty radius is about 50 feet, though pieces of shrapnel can still fly much farther than that.
However, the most bizarre thing about grenades in movies is pulling out the pin with teeth – that is pretty much impossible. The end of the pin is usually spread wide apart. This ensures that the pin will not be yanked out accidentally and will not simply fall out.
It's a common trope in action flicks and war films." "In reality, grenade pins are designed to be hard to pull so they won't be pulled accidentally. Attempting to pull them with your teeth will likely result in some painful dental damage."
Since grenades have a timed fuse, it's theoretically possible for an enemy target to pick up the grenade and throw it back at you.
Can you catch a grenade and throw it back?
You almost never throw a grenade back. This would involve aiming which costs additional time (that you don't have). What you do instead is you either throw it away or deflect it. This is indeed possible and people are doing it, mainly because they have no other choice.
And the problem that you 𝘤𝘢𝘯'𝘵 dodge—which is the resulting pressure wave from the explosion—is what's pretty much guaranteed to kill you underwater. On land, the atmosphere would absorb most of the explosive energy, because of air's compressibility.

Anyone who covers a grenade with their kevlar is going to be severely wounded. And, chances are, Dunham would probably have been killed by the grenade regardless due to his proximity. But his helmet likely absorbed all of the grenade's shrapnel and allowed his fellow Marines to come out relatively unscathed.
Modern fragmentation grenades, such as the United States M67 grenade, have a wounding radius of 15 m (49 ft) – half that of older style grenades, which can still be encountered – and can be thrown about 40 m (130 ft). Fragments may travel more than 200 m (660 ft).
military applications
Such grenades usually weigh no more than 2 pounds (0.9 kg).
The military no longer teaches cooking off grenades and soldiers are not supposed to attempt it. Cooking off a grenade means releasing the spoon (which starts the delay) but then holding onto the grenade for 1-2 seconds longer before throwing it. A grenade typically has a delay of 2.5-5 seconds.
Grenade: 1) A large, portly woman of an unsightly nature and violent disposition.
They also made a faint "hissing" sound while burning, potentially alerting the enemy of their presence.
What is the range of a grenade? On average a grenade can be thrown between 20 and 40 meters. The casualty radius of a grenade is between 5 and 20 meters; with a minimum of 50% of exposed personnel becoming casualties within a radius of around 15 metres from the blast.
Frankly they shouldn't as grenades are anti personel weapons (unless built into shaped charges for AT use). They should do damage to everything but stone and metal.
Can you pull a grenade pin with one hand?
all you have to do to use it is grab and throw. however if you try to spawn lock the grenade, the new grenades will still have pins, so you have to prep each Grenade but you can use them with one hand.
“Hooah, Sarge.”
Grenades are one of the most identifiable weapons that US troops carry.
The fragmentation hand grenade has a lethal radius of 5 meters and can produce casualties up to 15 meters, dispersing fragments as far away as 230 meters.
However, an underwater explosion transmits pressure with greater intensity over a longer distance. If you stood outside of shrapnel range for an exploding hand grenade, you'd likely remain unharmed. If you stood at the same range to an underwater explosion, the pressure wave would probably kill you [source: Landsberg].